BMS100 Past Test Questions
Chapter 9, Spring 2011
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  1. Most neurons have one (1) _?_, one (1) _?_, any many _?_.
    1. axon / cell body / dendrites
    2. axon / dendrite / cell bodies
    3. cell body / dendrite / axons
    4. dendrite / axon / cell bodies
    5. dendrite / cell body / axons

  2. Do mature neurons have a nucleus?
    1. Yes, mature neurons have a nucleus, and it is capable of mitosis.
    2. Yes, mature neurons have a nucleus, but it is incapable of mitosis.
    3. No, mature neurons do not have a nucleus.

  3. Which statement is true?
    1. The nerves in the leg contain many axons.
    2. Some axons extend from the spine to the feet.
    3. Both of the above.
    4. None of the above.

  4. The cranial nerves
    1. are necessary for vision, hearing, and other senses that originate in the head
    2. are necessary for movements of the eyeballs and for making facial expressions
    3. are part of the central nervous system (CNS)
    4. both A. and B.
    5. all of the above

  5. How many nerves are attached to the spinal cord?
    1. 12 pairs (24 total)
    2. 31 pairs (62 total)
    3. 43 pairs (86 total)

  6. What type of neuron has its dendrites in contact with a receptor, and its axon terminals in the central nervous system?
    1. motor neuron
    2. sensory neuron
    3. interneuron
    4. none of the above (no neuron could have its dendrites in contact with a receptor and its axon terminals in the CNS)

  7. Most motor neurons receive their signals from
    1. muscles
    2. other motor neurons
    3. interneurons
    4. all of the above

  8. The total number of positive electrical charges inside a neuron is _?_ the total number of negative electrical charges inside the same neuron.
    1. greater than
    2. less than
    3. equal to

  9. When an axon is not conducting an action potential, its membrane potential is
    1. approx. 65 volts, negative inside
    2. approx. 65 millivolts, negative inside
    3. approx. 65 millivolts, negative outside
    4. zero (0)

  10. What type of cell is capable of generating an action potential?
    1. neuron
    2. muscle fiber
    3. both of the above
    4. none of the above

  11. Action potentials travel
    1. away from the cell body, through the axon
    2. through the axon, toward the cell body
    3. both A. and B.

  12. What causes the membrane potential to become temporarily positive during an action potential?
    1. rapid movement of sodium ions, through "sodium pumps," and into axon
    2. rapid movement of sodium ions, through "sodium pumps," and out of axon
    3. rapid movement of sodium ions, through "sodium gates," and into axon
    4. rapid movement of sodium ions, through "sodium gates," and out of axon

  13. What is the effect of a myelin sheath on nerve conduction through an axon?
    1. allows axon to conduct action potentials in both directions
    2. increases velocity of conduction of action potentials
    3. decreases velocity of conduction of action potentials
    4. both A. and B.
    5. both A. and C.

  14. In the brain, white matter
    1. contains many cell bodies
    2. contains many axons covered with myelin
    3. is capable of thinking, consciousness, etc.
    4. both A. and C.
    5. both B. and C.

  15. A part of the brain that can process information and make decisions, even if subconsciously, would contain mainly
    1. myelin
    2. meninges
    3. cell bodies and synapses
    4. all of the above

  16. Learning and intelligence occurs mainly in the _?_, which is composed of _?_.
    1. cerebral cortex / gray matter
    2. cerebral cortex / white matter
    3. corpus callosum / gray matter
    4. corpus callosum / white matter

  17. What type of functional area occupies the greatest percentage of the cerebral cortex?
    1. sensory
    2. motor
    3. association

  18. The frontal lobe of the right cerebral hemisphere contains
    1. the primary motor area that activates muscles on the right side of the body
    2. the primary motor area that activates muscles on the left side of the body
    3. the motor speech area that activates muscles necessary for speech
    4. A. and C.
    5. B. and C.

  19. The _?_ contains the primary visual area, and the _?_ lobe contains the primary auditory ("hearing") area.
    1. parietal / temporal
    2. temporal / occipital
    3. temporal / parietal
    4. occipital / temporal
    5. occipital / parietal

  20. The "vital centers" that are needed for breathing, blood pressure, etc., are located in the
    1. cerebrum
    2. cerebellum
    3. brainstem
    4. diencephalon

  21. What is the role of the cerebellum in voluntary movements?
    1. generates conscious intent to move
    2. generates signals that provide balance and coordination
    3. both of the above
    4. none of the above

  22. In order to consciously perceive sounds, signals must first pass through the
    1. thalamus
    2. hypothalamus
    3. corpus callosum
    4. vestibule of the inner ear

  23. True or false? The hypothalamus plays a major role in feelings of hunger and control of digestion.
    1. True.
    2. False.

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