Muscular System

5. wavelike rhythmic motion
7. the amount of oxygen needed to be able to convert lactic acid to gluclose
8. closes the jaw
9. muscle fibers are separate
16. fibers remain unresponsive until a certain strength of stimulation
18. neurotransmitter in skeletal muscle
21. muscle that assist the prime mover
22. puckers lips
24. you sit on it
29. contractile response
33. a small gap
36. functional connection
37. delay between the time a stimulus is applied and the time the muscle responds
38. the place where aerobic respiration occurs
39. causes action
42. produces signals to communicate with cells
43. this enzyme is present at the neuromuscular junctions

1. layers of dense connective tissue
2. another name for cell membrane
3. a motor neuron and the muscle fibers that it controls constitutes this
4. found at the end of cardiac muscle to hold adjacent cells together
6. composed of primarily myosin and actin
10. sets of membranous reticulum
11. shaped like a delta or triangle
12. adducts the thigh
13. thin protein filament
14. attached to the sternum, clavicle, and mastoid process
15. also referred to as a 6 pack
17. neurons that control effectors
19. a increase in the number of motor units being activated during a contraction
20. light bands structures are directly attached to these
23. less moveable end
24. flexes the leg at the knee
25. thick filaments composed of protein
26. ions combine with troponin to change the shape of tropomyosin
27. fascia blends with
28. type of muscle that has spindle shaped cells
30. composed of thin actin filaments
31. involuntary muscle with no striations
32. pigment that produces reddish brown pigment
34. lack of this can cause cramping
35. organ of the muscular system
40. responsible for the striations in skeletal appearances
41. bundles of skeletal muscle are called