Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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unmyelinated axon : slow nerve impulses :: a. | neuron : being
composed of many axons | b. | nerve impulse : not traveling through
axons | c. | myelinated axon : fast nerve impulses | d. | dendrite :
sending information | | |
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2.
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After
an action potential, the sodium-potassium pump helps a. | rebuild axon
fibers. | c. | cause a
stimulus. | b. | restore the resting potential. | d. | All of the above | | | | |
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3.
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Neurotransmitters are a. | electrical impulses. | b. | found only in
neurons with myelin sheaths. | c. | released at synapses. | d. | produced by
muscles. | | |
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4.
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Refer
to the illustration above. If neurotransmitters could not be cleared out of a synapse after
transmitting a message, a. | a postsynaptic neuron would continue to be stimulated for an
indefinite period of time. | b. | the presynaptic neuron could not pass on its
impulse. | c. | the postsynaptic neuron would not be
stimulated. | d. | None of the above | | |
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5.
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Which
of these is not a lobe of the brain? a. | occipital | c. | auditory | b. | parietal | d. | temporal | | | | |
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