Muscular System

3. bundle of muscle cells
4. connective tissue membrane around the entire muscle
5. striation that contains overlapping thick and thin filaments
6. long, filamentous contractile organelles of skeletal muscle cells
9. protein fibers that contribute to the banding pattern of striated muscles
11. individual contracting unit of the muscle cell
13. a nerve cell and all of the muscle cells that it stimulates
14. muscle cells
18. where a muscle cell and a nerve cell come in close association and acetylcholine is released
21. dense connective tissue that connects muscles to bones
22. muscle that is found attached to bone; striated and voluntary
23. the idea that thick filaments slide past thin ones during muscle contraction
24. thin filaments
25. muscle that makes up the heart; striated and involuntary

1. organelle that stores and releases calcium within the muscle cell
2. where thick filaments bind to thin filaments
7. the plasma membrane of the muscle cell
8. connective tissue membrane around the bundle of muscle cells
10. a chemical that is used to communicate across the space between a nerve cell and the next cell
12. thick filaments
15. stration that contains only thin filaments
16. muscle that is found in the walls of hollow organs; helps move substances within; non-striated and involuntary
17. the depolarization wave that begins a nerve impulse
19. connect tissue membrane around muscle cells
20. the specific chemical that is released by a neuron at a muscle that stimulates muscle contraction