exam 6 muscle tissue & muscle physiology

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  1. what are the major functions of the muscular system
    • producing movement
    • maintaining posture
    • stabilizing joints
    • generating heat
  2. what is the gross structure of skeletal muscle
    • muscle fivers 
    • blood vessels 
    • nerve fivers 
    • connective tissue (which supports each cell & reinforces the muscle as a whole)
  3. differentiate between endomysium, perimysium, epimysium, and fascicle
    • epimysium: surrounds whole muscle
    • perimysium: surrounds a fascicle
    • fascicle: bundles of muscle fibers 
    • endomysium: area between the individual muscle fivers in a fascicle 
  4. what is the sarcolemma
    plasma membrane of a muscle fiber
  5. what is the sarcoplasm
    the cytoplasm of a muscle cell, is similar to the cytoplasm aof other cells but it contains unusually large amounts of glycosomes and myoglobin
  6. what is glycosomes
    granules of glycogen that provide glucose during muscle cell activity
  7. what is myoglobin
    a red pigment that stores oxygen (O2 binging protein)
  8. what is a myofibrils
  9. what is a myofibril made of.
    • thick filaments 
    • thin filaments 
    • elastic filaments 

  10. what makes up a sacromere
    • z disc: anchors thin filaments boundary 
    • i band: thin filaments only & Z disc in the middle 
    • A band: full length of thick filaments an overlapping thin filaments 
  11. what is the protein composed in a thick filaments
  12. know what actin, tropomyosin, and troponin
  13. what is myasthenia gravis
    an autoimmune disease here antibodies block ACH receptors.
  14. what is botulism
    poisoning from a toxin produced by a bacterium from contaminated foods which cut off snare proteins that stop the release of ACh

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exam 6 muscle tissue & muscle physiology
2013-04-21 23:42:29

A&P1 Hixon
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