Biomed 100 Practice Quiz
Chapter 8, Fall 2006
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Multiple Choice - One Correct Choice Per Question
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  1. A muscle fiber that contains H bands, A bands, I bands and Z discs will have the property of being...
    1. voluntary
    2. striated
      3.
    3. highly resistant to fatigue
    4. all of the above
    5. none of the above

  2. Contraction of a skeletal muscle fiber is the direct result of reorientation of the cross bridges between...
    1. motor neurons and muscle fibers
    2. thick filaments and thin filaments
      3.
    3. motor neurons and thin filaments
    4. motor neurons and intercalated discs
    5. thick filaments and intercalated discs

  3. Intercalated discs are involved in the spread of electrical impulses in...
    1. skeletal muscle tissue
    2. smooth muscle tissue
    3. cardiac muscle tissue
      4.
    4. all types of striated muscle tissue
    5. all types of voluntary muscle tissue

  4. When the muscle of the iris of the eye _?_, the pupil _?_.
    1. constricts / contracts
    2. contracts / constricts
      3.
    3. dilates / contracts
    4. relaxes / contracts

  5. Which one of the following is true?
    1. Typically, one motor neuron controls one skeletal muscle fiber.
    2. Typically, one motor neuron controls several skeletal muscle fibers.
      3.
    3. Typically, one motor neuron controls an entire skeletal muscle.
    4. None of the above is true.

  6. True or false? The muscles of pulmonary ventilation (breathing) are composed of voluntary muscle tissue.
    1. True.
      2.
    2. False.

  7. The unit of skeletal muscle that is closest to being a cell is a...
    1. fiber
      2.
    2. myofibril
    3. motor unit
    4. thick filament
    5. thin filament