BIOL 203 HW 12

3. gap between the presynaptic terminal and the muscle fiber
7. a sudden, fast, transitory and propagating change of the resting membrane potential
9. this binds to troponin and causes tropomyosin to shift
11. this diffuses and binds to nicotinic cholinergic receptors
13. myosin heads rotate toward center of the sarcomere
14. the process by which the electrical potential across the membrane is restored to its resting value
15. ACH is broken down by this and ends in a cholinergic neurotransmission
17. tension produced by a single twitch can be measured by what?
19. the theory of how a muscle contracts

1. muscle that prevents movement of bone while prime movers act
2. occurs when there is a partial relaxation between muscle twitches
4. difference in electrical potential between the inside and outside of a cell
5. as more motor units are recruited, the muscle contraction grows progressively what?
6. muscle shortens, part of isotonic tension
8. arrival of an AP at the sarcolemma
10. low-level, constant tension in the muscles at rest
12. has a relative tension generated at 2.0-2.5 sarcomere length
16. the motor unit has less precise movements
18. one motor neuron and all the muscle fibers innervated by it