Muscular System

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