Questions All Solved.
The characteristic of muscle that allows it to be passively stretched is - Answer extensibility
A circular muscle band that contracts at an orifice is also known as a _______________. - Answer
sphincter
Select all that are true when a muscle fiber is at rest. - Answer - ACh receptors are open
- Calcium is stored in the sarcoplasm
The ______ is the connective tissue covering of a fascicle. - Answer perimysium
Which is the neurotransmitter that causes the release of calcium ions from reservoirs within the muscle
cell and thereby initiates the steps of contraction? - Answer Acetylcholine
Relaxation is facilitated by the release of passive tension that developed in cablelike __________
proteins that were compressed during contraction. - Answer connectin
Skeletal muscle contraction requires large amounts of energy in the form of ___________ in order to
complete the sequence of cyclic events that lead to sarcomere shortening. - Answer ATP
When someone engages in exercise that requires more oxygen than is available, they develop a(n) _____
_______ (2 words), which results in heavy breathing for several minutes after the exercise is complete. -
Answer oxygen debt
The vascular supply to slow-twitch muscle fibers is ______ the network of capillaries around fast-twitch
muscle fibers. - Answer more extensive than
The type of fibers specialized to continue contracting for extended periods of time, as would be required
in running a marathon, for example, are _____ fibers. - Answer slow-twitch