Flashcards in Muscles of respiration Deck (17)
Origin of Scalenes?
Transverse processes for C2 to C7 of Cervical vertebrae
Insertion of Scalenes?
1st & 2nd Rib
Scalenes role in inspiration?
Contraction - elevating ribs
Manubrium of sternum/clavicle
Mastoid process of temporal bones of skull
Pectoralis Minor Origin?
3rd to 5th ribs
Pectoralis Minor Insertion?
Coracoid process of scapula
Role of Pectoralis Minor in inspiration?
Elevates 3rd to 5th rib and expands ribs
Pectoralis Major Description?
Fan shaped muscles which sit on top of the Pectoralis minor
Role internal intercostals in expiration?
Lowers rib cage and moves it inwards
Origin of Internal Intercostals?
Superior border of ribs
Insertion of Internal Intercostals
Inferior border of ribs
Role of the Oblique's
Return chest wall into place
Affects the lower 8 ribs
Role of the Rectus Abdominus
Attach sternum to pelvic girdle
Role of Quadratus Lumborum
Connects Pelvis to spine
Depresses the thoracic rib cage
Origin of Quadratus Lumborum
Transverse processes of L1 – L4, the ilolumbar ligament, posterior third of the iliac crest