Muscular System

4. Ion that uncovers the cross-bridge binding site
6. Which type of muscle is voluntary?
7. Which type of muscle is unstriated?
9. Calcium binds to in order to reveal actin binding sites
10. Type of motor unit recruited when lifting heavy things
14. What type of muscle fiber uses energy from glycolysis
17. Degrades acetylcholine
19. An alpha motor neuron and all the muscle fibers it innervates
20. Part of the sarcomere that contains only thin filament
21. Also known as thin filament
22. Parts of the sarcomere that consists of both myosin and actin
23. Muscle fibers are composed of
25. What is stored in vesicles that get released into to neural muscular junction?

1. Where is calcium stored and actively transported?
2. Type of motor unit recruited for precise movement
3. Contractile protein in skeletal muscle that binds to ATP
5. One of the energy sources available to muscle
8. Blocks the actin binding site for myosin head
11. What type of phosphorylation does slow oxidative get it's energy from?
12. The smallest unit of the muscle
13. Part of the sarcomere that contains only thick filament
15. What type of muscle fiber produces a lot of ATP but also gets fatigue faster
16. Causes the sarcomere to shorten and contract as ADP and Pi gets released
18. Where does smooth muscle get its calcium from?
24. Receptor located in the membrane of the SR and releases calcium