Sports medicine

5. found in blood vessels, intestines, muscles of inspiration, around blood vessels
11. muscles contract or shorten lengthwise
12. contain intercalated discs- help the muscle cells beat in sync
15. refers to muscle
16. end plate area on sarcolemma that contains acetylcholine receptors
18. nerve that sends the signal to the muscle to contract
19. powerhouse of cell
20. space between the nerve ending and the motor end plate of the muscle fiber.
22. a net
23. muscles are stimulated by electrical signals, such as nerve impulses
25. the ability of the muscle to stretch and return to its original length
26. muscle that aids the prime mover in the movement
27. the same
29. contains DNA
30. Includes involuntary actions such as heart contraction, movement of food through intestines

1. standing still
2. the membrane
3. grouped together and wrapped in a membrane called perimysium
4. neurotransmitter that causes muscular contraction
6. muscle is metabolically active to produce heat
7. a cell
8. innate tension in a muscle that allows the muscle to regain its original shape after being stretched
9. net like structure
10. muscle that relaxes when the other contracts
13. muscle most responsible for the movement
14. one motor neuron and all the skeletal muscle fibers it innervates
17. tubes that run throughout the muscle
21. neurotransmitter that degrades ach and ends muscular contraction
24. decrease in body temperature results in involuntary spasms of skeletal muscle
28. study of muscle