Muscular System

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Across
  1. 2. Paralyzes and relaxes muscles
  2. 5. Have enough O2
  3. 7. Not enough O2
  4. 8. Decrease muscle use
  5. 10. Fiber fully contracts or doesn't at all
  6. 13. Like string cheese
  7. 14. potential Acetylcholine attaches to receptors on muscle and electric current is formed
  8. 15. The fusion of many rapid nerve impulses into one smooth contraction
  9. 16. The two types of protein in muscles are Myosin and Actin
  10. 17. They are excitable, are elastic,contract,and extend.
  11. 18. Make up muscle fibers
  12. 21. Genetic causes degeneration of muscles
  13. 24. Also called muscle cell
  14. 26. Energy+P+APP ->
  15. 28. Uncontrolled contraction
  16. 29. Occurs mostly where muscles are weak
  17. 30. More moveable end of muscle
  18. 31. Less movable end of muscle
Down
  1. 1. The kind of muscle skeletal muscle is
  2. 3. Spasm of diaphragm
  3. 4. Maintains homeostasis by movement, maintain posture and body temperature
  4. 6. Used in South America from a plant that blocks Acetylcholine receptors on muscles
  5. 9. Increase the number of Actin and Myosin filaments which increase muscle size
  6. 11. Muscle that runs through cheek
  7. 12. Muscles become stiff several hours after death
  8. 19. Shiny layer on outside of muscle
  9. 20. Muscle that straightens a limb when it contracts, increasing angle between bones
  10. 22. Caused by overuse, dehydration, or K/Ca/Mg are too low
  11. 23. Muscle that bends a limb when it contracts, reducing angle between bones
  12. 25. Functional unit of muscle cells, make up Myofibrils
  13. 27. Muscle in the inner thigh