AIIMS2004Zoology-Animal Physiology
AIIMS 2004 Zoology Nervous System MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that
A
nerve fibre is insulated by a medullary sheath
B
sodium pump starts operating only at the cyton and then continues into the nerve fibre
C
neurotransmitters are released by dendrites and not by axon endings
D
neurotransmitters are released by the axon endings and not by dendrites
Correct Answer
Option D
Detailed Explanation
A synapse occurs where the axon of one neurone (the pre-synaptic neurone) meets either the dendrite or the cell body of another (post-synaptic neurone).
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