BMS100 Past Test Questions
Chapter 8, Fall 2008
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  1. In skeletal muscles
    1. the cells are often called "fibers"
    2. the cells contain many nuclei
    3. the cells contain many myofibrils
    4. all of the above
    5. none of the above

  2. The striations of muscle tissue are due to a precise pattern of overlapping
    1. epiphyseal discs and intercalated discs
    2. thick and thin filaments
    3. cell bodies and axons of motor neurons
    4. muscle fascicles and axon terminals of motor neurons

  3. During muscle contraction
    1. the "heads" of ATP molecules "pull" on myosin (thick) filaments
    2. the "heads" of motor neurons "pull" on actin molecules in thin filaments
    3. the "heads" of actin (thin) filaments "pull" on the bone of insertion
    4. the "heads" of myosin (thick) filament "pull" on actin molecules in thin filaments

  4. During a burst of high intensity, strength-oriented contractions, muscle fibers rely upon
    1. increased blood supply
    2. catabolism (breakdown) of fat
    3. aerobic breakdown of myoglobin
    4. anaerobic breakdown of glucose

  5. True or false? The strength of a muscle in response to different levels of stimulation is determined by the number of motor units being activated.
    1. True.
    2. False.

  6. Electrical impulses pass from one fiber, through intercalated discs, and to another fiber in
    1. smooth muscle tissue
    2. cardiac muscle tissue
    3. fast twitch skeletal muscle
    4. all types of muscle tissue

  7. Which part of a motor neuron is located entirely in the central nervous system?
    1. cell body
    2. most of axon
    3. terminal portion of axon
    4. both A and B
    5. both B and C

  8. What actually becomes shorter when a muscle contracts?
    1. thin filaments
    2. thick filaments
    3. both of the above
    4. none of the above

  9. Which one of the following is false?
    1. All types of muscle tissue exhibit the properties of excitability and contractility.
    2. When a skeletal muscle contracts, the origin moves toward the insertion.
    3. The muscles of pulmonary ventilation (breathing) are skeletal muscles.
    4. When the eye is exposed to bright light, it is contraction of smooth muscle that causes the pupil to constrict.