The connective tissue sheath that envelops bundles of muscle fibers is the:
The covering of individual muscle fibers is the:
Groups of skeletal muscle fibers are bound together by a connective tissue envelope called the:
Which of the following is not one of the major functions of muscles?
The plasma membrane of a muscle fiber is called the:
Bundles of fine fibers that extend lengthwise along muscle fibers are called:
The smallest contractile unit of muscle is a:
Which of the following is also known as striated muscle?
Which of the following proteins found in myofilaments contains the cross bridges?
The protein molecule that has heads jutting out for cross bridging is:
Thick myofilaments extend the length of the:
The first event to occur in muscle relaxation is:
A) Tropomyosin returns to its original position
B) Myosin cross bridge are prevented from binding to actin
C) The sarcoplasmic reticulum begins actively pumping calcium back into its sacs D) Acetylcholine is released
The ion necessary for cross bridging is:
Which of the following types of muscle tissue contains cells that have a single nucleus?
From smallest to largest, which of the following is the correct order of arrangment?
Myofilament, myofibril, fiber
Which of the following is not associated with the thin myofilament?
Cross bridges are also called:
A sarcomere is a segment of myofibril between two succesesive: