Being key elements of spinal support, and contributors to good posture, it is important to properly exercise the abdominal muscles together with the back muscles because when these are weak or overly tight they can suffer painful spasms and injuries. When properly exercised, abdominal muscles contribute to improved posture and balance, reduce the likelihood of back pain episodes, reduce the severity of back pain, protect against injury by responding efficiently to stresses, help avoid some back surgeries, and help with the healing of back problems, or after spine surgery. When strengthened, the abdominal muscles provide flexibility as well. The abdominal muscles can be worked by practicing disciplines of general body strength such as Pilates, yoga, T'ai chi, and jogging.
Exercise
Abdomen
Abdomen | Exercise
Pilates, yoga, T'ai chi, and jogging Yes. Pilates, yoga, T'ai chi, and jogging. Yes, Pilates, yoga, T'ai chi, and jogging. Yes, Pilates, yoga, T'ai chi, and jogging
what tissue types form the wall of the ureter
user
urothelial cells
assistant
what is ureter?
user
The ureters are tubes made of smooth muscle that propel urine from the kidneys to the urinary bladder.
assistant
what is the size of this tube?
user
The ureters are between 1.5 - 6 mm in diameter, and surrounded by a layer of smooth muscle for 1 - 2 cm near their ends just before they enter the bladder.
assistant
can you name one function of this bladder?
user
Urine, excreted by the kidneys, collects in the bladder
assistant
do mammals also have this bladder?
user
Yes, all mammals have a urinary bladder
assistant
is it also prone to any deadly disease?
user
Yes, bladder cancer
assistant
does the tube also have anything to do with the supply of blood?
user
Yes, the arteries which supply the ureter vary along its course
assistant
do stones also form here?
user
Yes, a kidney stone can move from the kidney and become lodged inside the ureter
assistant
and what causes this stone to form in this tube?
user
Sorry. I cannot find the answer based on the context.
assistant
can these tubes also get damaged?
user
Yes, Injuries to the ureter can occur after penetrating abdominal injuries, and injuries at high speeds followed by an abrupt stop
assistant
what is the function of the abdomen?
user
Functionally, the human abdomen is where most of the digestive tract is placed and so most of the absorption and digestion of food occurs here
assistant
are there any type of exercises for this part of the body?
user
There are also specific routines which target each of these muscles.
Abdomen | Exercise
Eight, you can sit down on a bed with your legs straight and you will lie back and come back up without using your hands. Ninth, you will place your arms on the side of a chair and with your legs backwards you will push down until your abdominal touches the chair. Tenth, you will lie down with your feet straight and raise your legs up to a right angle and then back down. For a better visual understanding, all these exercises were obtained from an Abdominal Exercise Journal.
Abdominal exercise | Abdominal Exercises
Abdominal exercises are type of strength exercise those that affect the abdominal muscles (colloquially known as the stomach muscles or "abs").
Abdominal exercise | Introduction
There are multiple ways to work on our abdominals but here are ten abdominal exercises you can do that are effective. One type of exercise you can do is to lie on your back and put your feet at a 45° angle and move your legs as if you were riding a bicycle. Second, you can lay down with your hands on the side of your body and position a book on your stomach and raise your stomach up and down. Third, you can lay down and position your feet at a 45° angle and lift them up straight and bend them back down to the 45° angle then repeat.
Abdominal exercise | Abdominal Exercises
Functionally, the human abdomen is where most of the digestive tract is placed and so most of the absorption and digestion of food occurs here. The alimentary tract in the abdomen consists of the lower esophagus, the stomach, the duodenum, the jejunum, ileum, the cecum and the appendix, the ascending, transverse and descending colons, the sigmoid colon and the rectum. Other vital organs inside the abdomen include the liver, the kidneys, the pancreas and the spleen. The abdominal wall is split into the posterior (back), lateral (sides), and anterior (front) walls.
Abdomen | Function
The abdominal muscles can be worked out by practicing disciplines of general body strength such as Pilates, yoga, T'ai chi, and jogging among others. There are also specific routines to target each of these muscles.
Abdominal exercise | Types
Fourth, you can stand straight with both of your arms opened and straight and bend down to the left then to the right by using one hand at a time. Fifth, you can stand up and position your hands on your hips and rotate your body to the right then the left. Sixth, you can stand up straight and position your hands on your hips and rotate your body from right to left and vice versa while bending forward and backwards. Seventh, you can sit on top of your legs in a bed and bend your chest forward until it touches the bed then come back up to your normal position.
Abdominal exercise | Abdominal Exercises
Abdominal exercises are useful for building the abdominal muscles. This is useful for improving performance with certain sports, back pain, and for withstanding abdominal impacts (e.g., taking punches). According to a 2011 study, abdominal muscle exercises are known to increase the strength and endurance of the abdominal muscles. It has been highly disputed whether or not abdominal exercises have any reducing effect on abdominal fat. The aforementioned 2011 study found that abdominal exercise does not reduce abdominal fat; to achieve that, a deficit in energy expenditure and caloric intake must be created—abdominal exercises alone are not enough to reduce abdominal fat and the girth of the abdomen.
Abdominal exercise | Effects
Hypopressive exercises also involve the transverse abdominal, but they are based upon reflex contraction of the abdominal wall, rather than voluntary contractions that are a feature of traditional abdominal exercises. The significance of this is thought to be that hypopressive exercises increase the base tone of the abdominal wall (as well as the pelvic floor) and hence reduce resting waist circumference.
Vacuum exercise | Hypopressive exercises
The stomach contains a style, projecting from a diverticulum, or "style sac".
Tryblidiida | Anatomy
Abdominal muscles have many important functions, including in breathing, coughing, and sneezing, and maintaining posture and speech in a number of species. The anterior abdominal wall is made up of four muscles—the rectus abdominis muscle, the internal and external obliques, and the transversus abdominis."The two internal muscles, the internal oblique and the transverse abdominis, respond more to increases in chemical or volume-related drive than the two external muscles, the rectus abdominis and external oblique; the basis for this differential sensitivity is unknown".
Abdominal exercise | Functions of abdominal muscles
The abdomen (colloquially called the stomach," belly, tummy or midriff") is the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. The abdomen is the front part of the abdominal segment of the trunk. The area occupied by the abdomen is called the abdominal cavity. In arthropods it is the posterior tagma of the body; it follows the thorax or cephalothorax. In humans, the abdomen stretches from the thorax at the thoracic diaphragm to the pelvis at the pelvic brim. The pelvic brim stretches from the lumbosacral joint (the intervertebral disc between L5 and S1) to the pubic symphysis and is the edge of the pelvic inlet.
Abdomen | Introduction
Straighten and stiffen the fingers of one hand together, place them on the abdominal surface, and make a brief jabbing movement directly toward the anticipated structure. This quick movement often displaces the fluid so that your fingertips can briefly touch the surface of the structure through the abdominal wall."
Ballottement | Introduction
Being key elements of spinal support, and contributors to good posture, it is important to properly exercise the abdominal muscles together with the back muscles because when these are weak or overly tight they can suffer painful spasms and injuries. When properly exercised, abdominal muscles contribute to improved posture and balance, reduce the likelihood of back pain episodes, reduce the severity of back pain, protect against injury by responding efficiently to stresses, help avoid some back surgeries, and help with the healing of back problems, or after spine surgery. When strengthened, the abdominal muscles provide flexibility as well. The abdominal muscles can be worked by practicing disciplines of general body strength such as Pilates, yoga, T'ai chi, and jogging.
Abdomen | Exercise
This particularly involves improving intermuscular coordination or synchronization of participating muscles. Involvement of the core means more than just compressing abdominal muscles when in crouching or seated position. The role of the core muscles is to stabilize the spine. Resisting expansion or rotation is as important as the ability to execute the movement.
Abdominal exercise | Core training
It starts off with circular abdominal massage to aid digestion by warming and supporting spleen yang, using the entire upper torso to move the hands. The arms are then poised to open and stretch the armpit activating the spleen's close relationship with Heart and Liver (Heart is the 'mother' of spleen and liver stores xue) by stretching the flanks. The palms are empty to open PC-8 as the hip is raised to shift the leg forward while keeping the knee straight. The swinging torso and heavy step activates kidney yang to supports spleen yang in heating and 'cooking' food.
Five Animals | Bear
In another randomized study, scientists divided 24 sedentary adults, ages 18–40, into an exercise group and a control group. The exercise group added 7 abdominal exercises, 2 sets of 10 reps each, 5 days a week, for 6 weeks, into their daily routines. The scientists discovered that at the end of the 6 weeks, through comparing a variety of endurance tests, body composition tests, and anthropometrics, the subcutaneous fat around the abdominal region did not shrink. However, muscular endurance of the core region did improve when comparing the before and after of the number of sit-ups between the post-study exercise group and control group.
Spot reduction | Abdominal exercise vs abdominal fat
Abdominal exercises can also be performed with the help of some machines and the captain's chair is one of the most popular machines used in gyms and health clubs. Other machines are the Ab Roller, the Ab Rocket Twister, the Chin-up bar in conjunction with Ab Straps and the Torso Track. The exercise ball is also a tool that helps strengthen the abs. It may be more effective than the crunches on the floor because the abs do more work as the legs are not involved in the exercise. With respect to the Ab-Slide, the study performed by Bird et al.
Abdominal exercise | Gadgets
The circular muscle keeps the material moving forward and also prevents any back flow of waste. Also of help in the action of peristalsis is the basal electrical rhythm that determines the frequency of contractions. The taeniae coli can be seen and are responsible for the bulges (haustra) present in the colon. Most parts of the GI tract are covered with serous membranes and have a mesentery. Other more muscular parts are lined with adventitia.
Human digestive system | Large intestine
In the mid-line a slight furrow extends from the xiphoid process above to the pubic symphysis below, representing the linea alba in the abdominal wall. At about its midpoint sits the umbilicus or navel. The rectus abdominis on each side of the linea alba stands out in muscular people. The outline of these muscles is interrupted by three or more transverse depressions indicating the tendinous intersections. There is usually one about the xiphoid process, one at the navel, and one in between. It is the combination of the linea alba and the tendinous intersections which form the abdominal "six-pack" sought after by many people.
Abdomen | Surface landmarks
The bicycle targets the rectus abdominals and the obliques. Also, the rectus abdominals can be worked out with the basic crunch, the vertical crunch, the reverse crunch, and the full vertical crunch, and when at a low enough body fat percentage (10-12% for males, 15-18% for females) the individual parts of the muscle become visible; many refer to this visible separation as a six pack. By exercising the internal and external obliques the stomach can be flattened while the waist line can be reduced. The long arm crunch, in which arms are straightened behind you, adds a longer lever to the move and emphasizes the upper part of the abs.
Abdominal exercise | Bicycle crunch
The abdominal muscles have different important functions. They assist as muscles of exhalation in the breathing process during forceful exhalation. Moreover, these muscles serve as protection for the inner organs. Furthermore, together with the back muscles they provide postural support and are important in defining the form. When the glottis is closed and the thorax and pelvis are fixed, they are integral in the cough, urination, defecation, childbirth, vomit, and singing functions. When the pelvis is fixed, they can initiate the movement of the trunk in a forward motion. They also prevent hyperextension. When the thorax is fixed, they can pull up the pelvis and finally, they can bend the vertebral column sideways and assist in the trunk's rotation.
Abdomen | Movement, breathing and other functions
An abdominal examination is a portion of the physical examination which a physician or nurse uses to clinically observe the abdomen of a patient for signs of disease. The physical examination typically occurs after a thorough medical history is taken, that is, after the physician asks the patient the course of their symptoms. The abdominal examination is conventionally split into four different stages: first, inspection of the patient and the visible characteristics of their abdomen. Auscultation (listening) of the abdomen with a stethoscope. Palpation of the patient's abdomen. Finally, percussion (tapping) of the patient's abdomen and abdominal organs. Depending on the need to test for specific diseases such as ascites, special tests may be performed as a part of the physical examination.
Abdominal examination | Introduction
A jackknife is an abdominal exercise. This exercise is also known as a "V-Up". Jackknife exercises are designed to strengthen the upper and lower abdominal muscles, particularly the transversus abdominis muscle. There are a number of variations of jackknife exercises that allow people of different ages and ability to work their abdominal muscles. This exercise can be modified by using an exercise ball. The jackknife can be done by lying flat on your back with your arms extended overhead and your feet raised slightly above the floor. The jackknife is completed by slowly bringing your straight arms toward your hips, and lifting your upper torso off the floor.
Jackknife (exercise) | Introduction
The slower one moves the arms from side to side, the harder the exercise becomes, working the abdomen that much better. When moving one's arms during the exercise, it is crucial to not stop between repetitions or else one will lose the effect of working the abdomen. Constant breathing in and out during the exercise is important as one should not hold one's breath. There are also other variants of this exercise such as using a stability ball or with a barbell standing up.
Russian twist | Technique
One method by which the location of the abdominal contents can be appreciated is to draw three horizontal and two vertical lines.
Abdomen | Surface landmarks
The abdomen of the wētā is the largest and simplest part of its body. It is round, smooth, and lacks appendages except at its rear end. Because of this its functions are mainly internal, serving as an expandable container for the sex organs and digestive organs.
Deinacrida elegans | Abdomen
A method of developing long-term daily endurance in the muscles is to tie a string around the waist at the bellybutton level. The string is tied at 3/4 of one's maximum vacuum point. The string should be tight, but not noticeably cutting into the skin. When the transverse abdominis relaxes, the abdominal wall (belly) expands and the string will tighten for immediate feedback, reminding the user to contract the TA.
Vacuum exercise | String method
The rectus abdominis and transversus abdominis contract continually while performing push-ups to hold the body off the floor and keep the legs and torso aligned. The rectus abdominis spans the front of the abdomen and is the most prominent of the abdominal muscles. The transversus abdominis lies deep within the abdomen, wrapping around the entire abdominal area. Both muscles compress the abdomen, and the rectus abdominis also flexes the spine forward, although it does not execute this function when performing push-ups.
Push-up | Abdominals
There is a common misconception that spot exercise (that is, exercising a specific muscle or location of the body) most effectively burns fat at the desired location, but this is not the case. Spot exercise is beneficial for building specific muscles, but it has little effect, if any, on fat in that area of the body, or on the body's distribution of body fat. The same logic applies to sit-ups and belly fat. Sit-ups, crunches and other abdominal exercises are useful in building the abdominal muscles, but they have little effect, if any, on the adipose tissue located there.
Abdominal obesity | Myths
First, the musculature of the intestinal tract is described in detail, followed by an extensive discussion of the form, function, and position of the stomach. According to the text, the stomach is spherical; the stomach wall has an internal lining, which is "the seat of sensation", and an external fleshy coat that is involved in digestion. In order to access the spleen, which was thought to secrete black bile into the stomach through imaginary canals, the dissector was required to remove the "false ribs". The liver is said to have five lobes, the gallbladder is described as the seat of yellow bile, and the cecum is described with no mention of the vermiform appendix.
Mondino de Luzzi | Contributions to anatomy
The local contraction of the abdominal muscles to an abdominal sensory stimulus was to protect the internal viscera from damage.
Abdominal reflex | Evolutionary significance
Abdominal decompression consists of placing a rigid covered dome around the abdomen, with the inside being decompressed to -50 to -100 mmHg for 15 to 30 seconds out of each minute for 30 minutes, one to three times daily, or continuously during labour. Abdominal decompression has been known to treat abdominal compartment syndrome (ACS) helping patients who suffer from intra-abdominal pressure (IAP) and organ dysfunction.
Abdominal decompression | Technique
There are three layers of muscles in the abdominal wall. They are, from the outside to the inside: external oblique, internal oblique, and transverse abdominal. The first three layers extend between the vertebral column, the lower ribs, the iliac crest and pubis of the hip. All of their fibers merge towards the midline and surround the rectus abdominis in a sheath before joining up on the opposite side at the linea alba. Strength is gained by the criss-crossing of fibers, such that the external oblique runs downward and forward, the internal oblique upward and forward, and the transverse abdominal horizontally forward.
Abdomen | Muscles
Behind the mouth is a muscular, sclerotised pharynx, which acts as a pump, sucking the food through the mouth and on into the oesophagus and stomach. In some arachnids, the oesophagus also acts as an additional pump. The stomach is tubular in shape, with multiple diverticula extending throughout the body. The stomach and its diverticula both produce digestive enzymes and absorb nutrients from the food. It extends through most of the body, and connects to a short sclerotised intestine and anus in the hind part of the abdomen.
Arachnid | Diet and digestive system
Sections of this gut begin to differentiate into the organs of the gastrointestinal tract, and the esophagus, and stomach form from the foregut.
Stomach | Development
The term abdominis is an old Latin term for abdomen. In modern times, it is still used in anatomical classification of muscles in the human abdomen such as:
Abdominis | Introduction
When looking at the sides of the face, one can see that "the distance from the cheeks to the temples is disproportionately large." The figure is extensively modeled creating harsh contour lines especially on the knees and abdomen. The muscles are "rendered by grooves, with a decorative intent that is carried to the point of excess and stylisation." The inguinal ligament which creates a triangle shape in the lower abdomen is strongly modeled. Grooves on the abdomen suggest two more abdominal muscles than what is anatomically correct.
Sounion Kouros | Form
The vacuum exercise is an exercise which involves contracting some internal abdominal muscles, primarily the transverse abdominal muscle, and not as much the diaphragm. Repetitions of the exercise may be used as a form of endurance training, and light strength training. There is difficulty building strength in the muscle, as it is not easy to apply resistance training to the deeper internal muscles. The reasons for performing this exercise vary. It has been done for aesthetic purposes in bodybuilding competitions (to suck the abdomen in, making it appear less bulgy). It can be done to enhance overall core stability and strength.
Vacuum exercise | Introduction
Different medical procedures can be used to examine the organs of the gastrointestinal tract. These include endoscopy, colonoscopy, sigmoidoscopy, enteroscopy, oesophagogastroduodenoscopy and virtual colonoscopy. There are also a number of medical imaging techniques that can be used. Surface landmarks are important in the examination of the abdomen.
Abdomen | Examination
Her abdomen should be uncovered, and most women appreciate it if the individual performing the maneuver warms their hands prior to palpation.
Leopold's maneuvers | Performing the maneuvers
They originate at the pubis bone, run up the abdomen on either side of the linea alba, and insert into the cartilages of the fifth, sixth, and seventh ribs. In the region of the groin, the inguinal canal, is a passage through the layers. This gap is where the testes can drop through the wall and where the fibrous cord from the uterus in the female runs. This is also where weakness can form, and cause inguinal hernias.
Abdomen | Muscles
Abdominal exercises also put some degree of compressive force on the lumbar spine, putting unwanted stress on the lower back. In addition, exaggerated abdominal exercise can cause respiratory problems. A study of twelve exercises concluded that no single exercise covered all abdominal muscles with high intensity and low compression. The benefit of focused training on the "deep core" muscles such as the transversus abdominis has been disputed, with some experts advocating a more comprehensive training regimen.
Abdominal exercise | Safety of abdominal exercises
Like the other parts of the gastrointestinal tract, the human stomach walls consist of a mucosa, submucosa, muscularis externa, subserosa and serosa. The inner part of the lining of the stomach, the gastric mucosa, consists of an outer layer of column-shaped cells, a lamina propria, and a thin layer of smooth muscle called the muscularis mucosa. Beneath the mucosa lies the submucosa, consisting of fibrous connective tissue. Meissner's plexus is in this layer. Outside of the submucosa lies another muscular layer, the muscularis externa. It consists of three layers of muscular fibres, with fibres lying at angles to each other.
Stomach | Wall
The mean DRA located 4.5 cm above the umbilicus was 9.6 mm (± 6.6) for the exercise group and 38.9 mm (± 17.8) for the non‐exercise group. The mean DRA located at the umbilicus was 11.4 mm (± 3.82) for the exercise group and 59.5 mm (± 23.6) for the non‐exercise group. The mean DRA located 4.5 cm below the umbilicus was 8.2 mm (± 7.4) for the exercise group and 60.4 (± 29.0) for the non‐exercise group." Nevertheless, the following exercises are often recommended to help build abdominal strength, which may or may not help reduce the size of diastasis recti
Diastasis recti | Strength training
The space above this inlet and under the thoracic diaphragm is termed the abdominal cavity. The boundary of the abdominal cavity is the abdominal wall in the front and the peritoneal surface at the rear. In vertebrates, the abdomen is a large body cavity enclosed by the abdominal muscles, at front and to the sides, and by part of the vertebral column at the back. Lower ribs can also enclose ventral and lateral walls. The abdominal cavity is continuous with, and above, the pelvic cavity. It is attached to the thoracic cavity by the diaphragm. Structures such as the aorta, inferior vena cava and esophagus pass through the diaphragm.
Abdomen | Introduction
Therefore, the epigastric region is not a muscle nor is it an organ, but it is a zone of activity where the actions of the rectus abdominis and the diaphragm produce an outward bulging of the upper abdominal wall. It is also the spot where the Heimlich Maneuver is able to produce a rapid and forceful exhalation of breath.
Epigastrium | Introduction
Special maneuvers may also be performed, to elicit signs of specific diseases. These include
Abdominal examination | Other tests and special maneuvers
An abdominal examination may be performed because the physician suspects a disease of the organs inside the abdominal cavity (including the liver, spleen, large or small intestines), or simply as a part of a complete physical examination for other conditions. In a complete physical examination, the abdominal exam classically follows the respiratory examination and cardiovascular examination. The information gathered from the physical examination of the abdomen, along with the information from the history, are used by the physician to generate a differential diagnosis and ultimately a treatment plan for the patient.
Abdominal examination | Introduction
The rectus abdominis, colloquially the abdominals or "abs", works to counteract the contraction of the spinal erectors in order to stabilise the core region.
Bridge (exercise) | Rectus abdominis
An abdominal reflex is a superficial neurological reflex stimulated by stroking of the abdomen around the umbilicus. It can be helpful in determining the level of a central nervous system (CNS) lesion. Being a superficial reflex, it is polysynaptic.
Abdominal reflex | Introduction
In arthropods the abdomen is built up of a series of upper plates known as tergites and lower plates known as sternites, the whole being held together by a tough yet stretchable membrane. The abdomen contains the insect's digestive tract and reproductive organs, it consists of eleven segments in most orders of insects though the eleventh segment is absent in the adult of most higher orders. The number of these segments does vary from species to species with the number of segments visible reduced to only seven in the common honeybee. In the Collembola (Springtails) the abdomen has only six segments.
Abdomen | Other animals
Abdominal obesity is a condition where abdominal fat or visceral fat, has built up excessively between the abdominal organs. This is associated with a higher risk of heart disease, asthma and type 2 diabetes. Abdominal trauma is an injury to the abdomen and can involve damage to the abdominal organs. There is an associated risk of severe blood loss and infection. Injury to the lower chest can cause injuries to the spleen and liver. A scaphoid abdomen is when the abdomen is sucked inwards. In a newborn, it may represent a diaphragmatic hernia. In general, it is indicative of malnutrition.
Abdomen | Clinical significance
The rectus abdominis is the muscle that very fit people develop into the 6-pack ab look. Although, it should really be a 10 pack as there are 5 vertical sections on each side. The 2 bottom sections are just above the pubic bone and usually not visible, hence, the 6 pack abs. The rectus abdominals' function is to bend one's back forward (flexion). The main work of the abdominal muscles is to bend the spine forward when contracting concentrically.
Abdomen | Posture
Therefore, even though an increase in muscular development of a certain region in the body took place, it did not remove the fat around the muscles. Again, there was no proof of spot reduction taking place.
Spot reduction | Abdominal exercise vs abdominal fat
These are the inner oblique, inner circular, and outer longitudinal layers. The presence of the inner oblique layer is distinct from other parts of the gastrointestinal tract, which do not possess this layer.
Stomach | Wall
Initially the foregut, midgut, and hindgut are in extensive contact with the mesenchyme of the posterior abdominal wall. By the fifth week, the connecting tissue bridge has narrowed, and the caudal part of the foregut, the midgut, and a major part of the hindgut are suspended from the abdominal wall by the dorsal mesentery, which extends from the lower end of the esophagus to the cloacal region of the hindgut. In the region of the stomach, it forms the dorsal mesogastrium or greater omentum. In the region of the duodenum, it forms the dorsal mesoduodenum; and in the region of the colon, it forms the dorsal mesocolon.
Development of the digestive system | Mesentery
Both the abdominal and pelvic cavities are lined by a serous membrane known as the parietal peritoneum. This membrane is continuous with the visceral peritoneum lining the organs. The abdomen in vertebrates contains a number of organs belonging to, for instance, the digestive system, urinary system, and muscular system.
Abdomen | Introduction
Digestion begins in the mouth, which chews food into smaller pieces for easier digestion. Then it is swallowed, and moves through the esophagus to the stomach. In the stomach, food is mixed with gastric acids to allow the extraction of nutrients. What is left is called chyme; this then moves into the small intestine, which absorbs the nutrients and water from the chyme. What remains passes on to the large intestine, where it is dried to form feces; these are then stored in the rectum until they are expelled through the anus.
Human body | Digestive system
Human gastrointestinal tract
Outline of human anatomy | Alimentary system
At this point the tract is directed to the left of the body, perpendicular to the fossil slab, and its course can thus no longer be followed. Nearby and slightly above, a subsequent intestine part surfaces that has been interpreted as the jejunum. This thinner intestine turns to the back, running parallel to the ascending tract of the duodenum and ultimately disappearing under it, at the level of the twelfth dorsal vertebra. Apparently a loop to the front is made because it resurfaces below the tenth dorsal vertebra, first running upwards and then turning to the back below the hind vertebral column — or at places even over it: probably after death its position partly shifted upwards.
Scipionyx | Digestive system
The diaphragm is an important part of the body's digestive system. The muscular diaphragm separates the thoracic cavity from the abdominal cavity where most of the digestive organs are located. The suspensory muscle attaches the ascending duodenum to the diaphragm. This muscle is thought to be of help in the digestive system in that its attachment offers a wider angle to the duodenojejunal flexure for the easier passage of digesting material. The diaphragm also attaches to, and anchors the liver at its bare area. The esophagus enters the abdomen through a hole in the diaphragm at the level of T10.
Human digestive system | Diaphragm
Gastric acid, and the production of mucus in the stomach, are essential for the continuation of digestion. Peristalsis is the rhythmic contraction of muscles that begins in the esophagus and continues along the wall of the stomach and the rest of the gastrointestinal tract. This initially results in the production of chyme which when fully broken down in the small intestine is absorbed as chyle into the lymphatic system. Most of the digestion of food takes place in the small intestine. Water and some minerals are reabsorbed back into the blood in the colon of the large intestine. The waste products of digestion (feces) are defecated from the anus via the rectum.
Human digestive system | Introduction
The colour of abdomen is the same as the rest of the body, and are either bi-punctate or tri-punctate at the base.
Porcellio formosus | Description
Body parts on the belly (or ventral) side are not known, including any appendages.
Aaveqaspis | Description
At every flexure, a continuous peritoneal fold lies outside the colonic/mesocolic complex tethering this to the posterior abdominal wall.
Mesentery | Flexural anatomy
The large, sac-like digestive gland is placed at the left side of the visceral hump flanking the ovotestis and extends almost up to the end of the visceral hump. The intestine is densely ciliated and short. The anus opens slightly anterior, but separate to the nephropore and ventrolaterally on the right side of the visceral hump.
Pseudunela cornuta | Digestive system
Social and cultural perceptions of the outward appearance of the abdomen has varying significance around the world. Depending on the type of society, excess weight can be perceived as an indicator of wealth and prestige due to excess food, or as a sign of poor health due to lack of exercise. In many cultures, bare abdomens are distinctly sexualized and perceived similarly to breast cleavage.
Abdomen | Society and culture
Early results from a 2006 study found that walking exercise (not abdominal exercise specifically) reduced the size of subcutaneous abdominal fat cells; cell size predicts type 2 diabetes according to a lead author. Moderate exercise reduced cell size by about 18% in 45 obese women over a 20-week period; diet alone did not appear to affect cell size.
Abdominal exercise | Effects
Indigestible remnants arrive in the rear intestine, or rectum, which is once again lined with a cuticula and which opens at the anus, located on the underside near to the rear end. In almost every segment is a pair of excretory organs called nephridia, which are derived from coelom tissue. Each consists of a small pouch that is connected, via a flagellated conductor called a nephridioduct, to an opening at the base of the nearest leg known as a nephridiopore. The pouch is occupied by special cells called podocytes, which facilitate ultrafiltration of the blood through the partition between haemocoelom and nephridium.
Onychophora | Digestion
The abdominal cavity contains most organs of the digestive system, including the stomach, the small intestine, and the colon with its attached appendix. Other digestive organs are known as the accessory digestive organs and include the liver, its attached gallbladder, and the pancreas, and these communicate with the rest of the system via various ducts. The spleen, and organs of the urinary system including the kidneys, and adrenal glands also lie within the abdomen, along with many blood vessels including the aorta and inferior vena cava. The urinary bladder, uterus, fallopian tubes, and ovaries may be seen as either abdominal organs or as pelvic organs.
Abdomen | Contents
The two vertical or mid-Poupart lines are drawn from the point midway between the anterior superior spine and the pubic symphysis on each side, vertically upward to the costal margin. The right subcostal margin corresponds to the lower limit of the liver, while the right nipple is about half an inch above its upper limit.
Abdomen | Vertical lines
The crunch is one of the most popular abdominal exercises. When performed properly, it engages all the abdominal muscles but primarily it works the rectus abdominis muscle and the obliques. It allows both building six-pack abs, and tightening the belly. Crunches use the exerciser's own body weight to tone muscle, and are recommended as a low-cost exercise that can be performed at home.
Crunch (exercise) | Introduction
Similar to western medical practitioners, Japanese physicians and medical therapists use the abdomen (hara) in diagnosis to determine the health or otherwise of the patient, particularly, but not exclusively, the state of the abdominal organs or tissues and the related energy fields. While in western medicine the palpation of the abdomen (abdominal examination) is aimed at the physical organs palpable in that area to assess their size, shape, consistency, reaction to pressure and such, in eastern medicine the Hara is seen as an area that reflects the state of all the organs (physically palpable in the abdomen or not), their energetic as well as their physical state, and their complex functional relationships with each other.
Hara (tanden) | Diagnosis
According to Hayashi with this technique an exercise is presented with which all basic treatments are started practically. Palpating the popliteal fossa one can feal hardenings of the local tendons by moving one's fingers. The technique will be executed on the more reactive side. Here the affected person should raise his forefoot and shift his weight gently towards the heel. If both sides are reactive the technique will be done on both sides. The practitioner puts on his hand lightly to strengthen the tension within the movement chain positively. After three to five seconds the affected person should relax suddenly, afterwards the exercise will be repeated three to four times.
Sotai | Facilitate the lower abdomen
The stomach is a muscular, hollow organ in the gastrointestinal tract of humans and many other animals, including several invertebrates. The stomach has a dilated structure and functions as a vital digestive organ. In the digestive system the stomach is involved in the second phase of digestion, following chewing. It performs a chemical breakdown by means of enzymes and hydrochloric acid. In humans and many other animals, the stomach is located between the oesophagus and the small intestine. It secretes digestive enzymes and gastric acid to aid in food digestion. The pyloric sphincter controls the passage of partially digested food (chyme) from the stomach into the duodenum where peristalsis takes over to move this through the rest of the intestines.
Stomach | Introduction
This muscle is the innermost abdominal muscle. Its origin is the second sheet of the lumbodorsal fascia and the pelvic girdle and its insertion is the linea alba. Its action is the compression of the abdomen.
Cat anatomy | Transversus abdominis
From the crop, food passes to the small muscular stomach for crushing, and then goes past a digestive caecum before entering the relatively brief intestine.
Nautilus | Digestive system
The stomach is surrounded by parasympathetic (stimulant) and sympathetic (inhibitor) plexuses (networks of blood vessels and nerves in the anterior gastric, posterior, superior and inferior, celiac and myenteric), which regulate both the secretory activity of the stomach and the motor (motion) activity of its muscles. Because it is a organ, it normally expands to hold about one litre of food. The stomach of a newborn human baby will only be able to retain about 30 millilitres. The maximum stomach volume in adults is between 2 and 4 litres.
Stomach | Structure
One way to estimate the effectiveness of any abdominal exercise is in measuring the momentaneous activity by electromyography (EMG), with the activity generally being compared to that of the traditional crunch. However, an exercise of lower activity performed during a longer time can give at least as much exercise as a high-activity exercise, with the main difference being that a prolonged duration results more in aerobic exercise than strength training. The following tables rank abdominal exercises from highest to lowest in terms of activity as determined by the EMG measures: Compared to traditional crunch (100%)
Abdominal exercise | Momentaneous activity
Finally, the abdomen contains an extensive membrane called the peritoneum. A fold of peritoneum may completely cover certain organs, whereas it may cover only one side of organs that usually lie closer to the abdominal wall. This is called the retroperitoneum, and the kidneys and ureters are known as "retroperitoneal" organs. Abdominal organs can be highly specialized in some animals. For example, the stomach of ruminants, (a suborder of mammals that includes cattle and sheep), is divided into four chambers – rumen, reticulum, omasum and abomasum.
Abdomen | Contents
Applying this technique facilitates the connection of the center of the foot with the lower abdomen.
Sotai | Facilitate the lower abdomen
It is used in belly dance to actively perform flutters, engaging various fibres in the muscle selectively. Some believe the pressures it exerts upon the intestines are an aid to digestion. It is used in Taoist reverse breathing.
Vacuum exercise | Introduction
The abdomen generally comprises eleven segments and contains the digestive and reproductive organs. A general overview of the internal structure and physiology of the insect is presented, including digestive, circulatory, respiratory, muscular, endocrine and nervous systems, as well as sensory organs, temperature control, flight and molting.
Insect physiology | Introduction
Beyond lies the powerful muscular gizzard, lined by pyloric glands, and, in some species, containing stones that the animal swallows to help grind up food.
Stomach | Other animals
The following journal articles include sketches of different abdominal hair patterns and observed percentages of men exhibiting each pattern.
Abdominal hair | Further reading
This technique was shown to reduce pain and functional disability when compared to other conservative treatments. These results also had a long- term effect in reducing levels of pain and functional disability. This is because motor programming eventually became automatic, and conscious control was no longer needed to contract the deep abdominal muscles during activities.
Spondylolysis | Deep abdominal co-contraction exercises
Most critical organs are housed within the torso. In the upper chest, the heart and lungs are protected by the rib cage, and the abdomen contains most of the organs responsible for digestion: the stomach, which breaks down partially digested food via gastric acid; the liver, which respectively produces bile necessary for digestion; the large and small intestines, which extract nutrients from food; the anus, from which fecal wastes are egested; the rectum, which stores feces; the gallbladder, which stores and concentrates bile; the kidneys, which produce urine, the ureters, which pass it to the bladder for storage; and the urethra, which excretes urine and in a male passes sperm through the seminal vesicles.
Torso | Major organs
The upper lateral limit of the abdomen is the subcostal margin (at or near the "subcostal plane") formed by the cartilages of the false ribs (8, 9, 10) joining one another. The lower lateral limit is the anterior crest of the ilium and Poupart's ligament, which runs from the anterior superior spine of the ilium to the spine of the pubis. These lower limits are marked by visible grooves. Just above the pubic spines on either side are the external abdominal rings, which are openings in the muscular wall of the abdomen through which the spermatic cord emerges in the male, and through which an inguinal hernia may rupture.
Abdomen | Surface landmarks
The transverse abdominal muscle is flat and triangular, with its fibers running horizontally. It lies between the internal oblique and the underlying transverse fascia. It originates from Poupart's ligament, the inner lip of the ilium, the lumbar fascia and the inner surface of the cartilages of the six lower ribs. It inserts into the linea alba behind the rectus abdominis. The rectus abdominis muscles are long and flat. The muscle is crossed by three fibrous bands called the tendinous intersections. The rectus abdominis is enclosed in a thick sheath, formed as described above, by fibers from each of the three muscles of the lateral abdominal wall.
Abdomen | Muscles
He underwent an upper gastrointestinal series and was shown to have a stomach that expands four times larger than a normal stomach. His digestive rate of the stomach was also slower than a normal human.
Tim Janus | Career
The rectus abdominis muscle, also known as the "abdominal muscle", is a paired muscle running vertically on each side of the anterior wall of the human abdomen, as well as that of some other mammals. There are two parallel muscles, separated by a midline band of connective tissue called the linea alba. It extends from the pubic symphysis, pubic crest and pubic tubercle inferiorly, to the xiphoid process and costal cartilages of ribs V to VII superiorly. The proximal attachments are the pubic crest and the pubic symphysis. It attaches distally at the costal cartilages of ribs 5-7 and the xiphoid process of the sternum.
Rectus abdominis muscle | Introduction
In humans, the stomach lies between the oesophagus and the duodenum (the first part of the small intestine). It is in the left upper part of the abdominal cavity. The top of the stomach lies against the diaphragm. Lying behind the stomach is the pancreas. A large double fold of visceral peritoneum called the greater omentum hangs down from the greater curvature of the stomach. Two sphincters keep the contents of the stomach contained; the lower oesophageal sphincter (found in the cardiac region), at the junction of the oesophagus and stomach, and the pyloric sphincter at the junction of the stomach with the duodenum.
Stomach | Structure
Segmentation also occurs during and shortly after a meal within short lengths in segmented or random patterns along the intestine. This process is carried out by the longitudinal muscles relaxing while circular muscles contract at alternating sections thereby mixing the food. This mixing allows food and digestive enzymes to maintain a uniform composition, as well as to ensure contact with the epithelium for proper absorption.
Gastrointestinal physiology | Segmentation
The most common abdominal surgeries are described below.
Abdominal surgery | Types
If the victim can not receive pressures on the abdomen (for example, in case of pregnancy or excessive obesity), chest thrust are advised instead. These are applied on the lower half of the chest bone, but not in the very endpoint (which is the xiphoid process and could be broken).
Abdominal thrusts | Technique
The gut rotates as it re-enters the abdominal cavity which allows for the small intestine and colon to migrate to their correct anatomical position by the end of the 10th week of development. This process fails to occur normally in cases of exomphalos, resulting in abdominal contents protruding from the umbilical ring. Gut contents fail to return to the abdomen due to a fault in myogenesis (muscle formation and migration during embryogenesis). During embryogenesis the mesoderm that forms muscle divides into several somites that migrate dorso-ventrally towards the midline. The somites develop three parts that are sclerotome which will form bone, dermatome which will form skin of the back and myotome which will form muscle.
Omphalocele | Pathophysiology
This breaks down fats to some degree though is not as efficient as the pancreatic lipase. The pylorus, the lowest section of the stomach which attaches to the duodenum via the pyloric canal, contains countless glands which secrete digestive enzymes including gastrin. After an hour or two, a thick semi-liquid called chyme is produced. When the pyloric sphincter, or valve opens, chyme enters the duodenum where it mixes further with digestive enzymes from the pancreas, and then passes through the small intestine, where digestion continues. When the chyme is fully digested, it is absorbed into the blood. 95% of absorption of nutrients occurs in the small intestine.
Human digestive system | Stomach
The enzymes start to break down the food in the mouth. Chewing, in which the food is mixed with saliva, begins the mechanical process of digestion. This produces a bolus which can be swallowed down the esophagus to enter the stomach. In the stomach the gastric phase of digestion takes place. The food is further broken down by mixing with gastric acid until it passes into the duodenum, in the third intestinal phase of digestion, where it is mixed with a number of enzymes produced by the pancreas. Digestion is helped by the chewing of food carried out by the muscles of mastication, the tongue, and the teeth, and also by the contractions of peristalsis, and segmentation.
Human digestive system | Introduction
The examiner should first talk to the patient and explain what this part of the examination will involve. He or she will typically palpate all nine areas of the patient's abdomen, and being mindful of areas of discomfort, begin by palpating areas of no pain. This is typically performed twice, first with light pressure and then with deeper pressure to better exam the abdominal organs. On light palpation, the examiner tests for any palpable mass, rigidity, or pain on the surface. On deep palpation, the examiner is testing for any organomegaly (enlarged organs.) Typically, the clinician is looking for enlargement of the liver and spleen or abnormal masses in the intestines.
Abdominal examination | Palpation