Ap lab

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sjmjr
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142733
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Ap lab
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2012-03-20 15:20:40
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Ap lab
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Ap lab
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  1. What are skeletal muscles associated with?
    Movement of the body
  2. What are the 3 types of contractile cells (ie three types of muscle) in the body?
    • Smooth
    • Cardiac
    • Skeletal
  3. Is skeletal muscle striated? Is it voluntary or involuntary?
    • Yes
    • Voluntary
  4. Is cardiac muscle striated? Is it voluntary or involuntary?
    • Yes
    • Involuntary
  5. Is smooth muscle striated? Is it voluntary or involuntary?
    • No
    • Involuntary
  6. What is the name of the connective tissue that wraps an entire muscle?
    Epimysium
  7. What makes up skeletal muscle?
    Facscicle
  8. What is a fascicle?
    A bundle of muscle cells bound together by connective tissue to form a functional unit.
  9. What is the connective tissue that wraps the fascicle?
    Perimysium
  10. What is the connective tissue found within a fascicle?
    Endomysium
  11. What are the 2 functions of the endomysium
    • Seperates muscle cells
    • Electrically insulates muscle cells
  12. What 2 functions do the connective tissue layers of muscles have
    • Strength
    • Support
  13. What are the connective tissue layers of muscle continuous with at the ends of muscles
    Tendons
  14. what is amother name for a muscle cell?
    Fiber
  15. What are myofibrils made up of?
    Individual contractile proteins called myofiliments
  16. What are the 2 types of myofiliments
    • Thin myofiliment
    • Thick myofiliment
  17. What protein makes up thin myofiliments
    Actin
  18. What protein makes up thick myofiliments
    Myosin
  19. What are the alternating light and dark bands that result from the arrangement of thick and thin myofiliments
    Striations
  20. What is the contractile unit of a muscle cell
    Sacromere
  21. List the organized levels of skeletal muscle from largest to smallest
    • Myofiliments
    • Myofibril
    • Muscle cell (musclfiber
    • Fascicle
    • Muscle

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