Muscle System Review 4

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Author:
hey_itsdarra
ID:
196068
Filename:
Muscle System Review 4
Updated:
2013-01-28 17:28:39
Tags:
OHS Anatomy
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Description:
4th 6t weeks
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  1. Tendons are oftern continuous with thr endosteum of bone tissue.
    False
  2. There are more than 600 muscles in the body.
    True
  3. The circulatory system is responsible for muscle tone.
    False
  4. Muscle cells and muscle fibers are interchangeable terms.
    True
  5. Groups of muscle cells held together by the perimysium are called fascia
    False
  6. Fascia is another term for perimysium
    False
  7. Myofibrils contain several sarcomeres lined up end to end
    True
  8. Muscle cells have one nucleus and one mitochondrion
    False
  9. The cell membrane of a muscle fiber is called the sarcoplamic reticulum
    False
  10. At rest, troponin covers the active sites on the actin molecules
    False
  11. Myosin filaments interact with actin filaments during muscle contraction
    True
  12. When sarcomeres shorten, myofibrils also shorten
    True
  13. Compound that supplies the energy for muscle contraction
    ATP
  14. Protein that has receptor sites for an ion causes it to change shape and pull another protein away from the receptor sites on the actin
    Troponin
  15. Ion that is released by the sarcoplasmic reticulum
    Calcium
  16. Protein that directly prevents the formaton of cross bridges in the sarcomere
    Tropomyosin
  17. Protein that has cross bridge heads that pull on thin fiber
    Myosin
  18. By energizing these structures, chemical energy is converted to mechanical energy
    Cross bridges
  19. Protein that has active sites for cross bridge heads
    Actin

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