If the myelin sheathing on neurons is absent or removed in a given individual, he or she will exhibit difficulties in speaking, vision, and balance because without myelin, the ____.?
a. ?quantity of neurotransmitters released into synapses will be reduced
b. ?quantity of neurotransmitters released into synapses will be increased
c. ?speed of neural conduction along critical paths will be too fast
d. ?speed of neural conduction along critical paths will be too slow
ANSWER:
d
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