Muscular System
Across
- 2. involuntary contraction are done via ______
- 3. only cardiac muscle in the human body
- 5. a bundle of skeletal muscle cells bound together by fasciae
- 7. type of contraction wherein tension is generated without changing length
- 10. the fine transparent tubular sheath that envelops the fibers of skeletal muscles
- 14. make up the walls of the heart
- 15. type of muscles that are found in organs
- 19. type of contraction wherein muscle tension is sufficient to overcome the load and muscles shorten as it contracts
- 21. connects bones to the muscles
- 26. the endoplasmic reticulum of cardiac and skeletal muscles that functions as a storage and release area for calcium.
- 27. a functional unit of striated muscle
- 28. "relating to the heart"
- 29. type of contraction wherein tension generated is insufficient to overcome the external load on the muscle; muscle fibers lengthen as they contract
- 30. electric signals that signals your muscles to contract
Down
- 1. type of muscles that attach to and move bones
- 4. done at a person's conscious effort
- 6. wispy layer of areolar connective tissue that ensheaths each individual muscle fiber or muscle cell
- 8. structural unit of a myofibril in striated muscle, consisting of a dark band and the nearer half of each adjacent pale band
- 9. any of the elongated contractile threads found in striated muscle cells
- 11. another protein that forms the contractile filaments of muscle cells, and is also involved in motion in other types of cells.
- 12. type of contraction wherein tension in the muscle remains constant despite a change in length
- 13. cells are aligned in parallel bundles so their different regions for stripes visible under a microscope
- 16. the activation of tension-generating sites within muscle fibers
- 17. protein that forms the contractile filaments of muscle cells
- 18. condition wherein the body remains semi-contracted for an extended period
- 20. a sheath of fibrous elastic tissue surrounding a muscle.
- 22. nerve simulation that triggers voluntary contraction
- 23. unconsciously done
- 24. the sheath of connective tissue surrounding a bundle of muscle fibers
- 25. band of fibrous tissues that have the ability to contract and produce movement in or maintaining the position of parts of the human or animal body