Synaptic conduction is mostly ohodromic because
Correct Answer: Chemical mediator is located only in the presynaptic terminal
Description: Chemical mediator is located only in the presynaptic terminal An axon can conduct the impulse in either direction. When an action potential is initiated in the middle of an axon, 2 impulses traveling in opposite directions are set up by electronic depolarization on either side of the initial current sink. In living animals, impulses normally pass in one direction only Q (from synaptic junctions or receptors along axons to their termination). Such conduction is called ohodromic. Conduction in the opposite direction is called antidromic. Q Since synapses, unlike axons, permit conduction in 1 direction only, any antidromic impulse that they set up fail to pass the first synapse they encounter and die out at that point Ref: guyton and hall textbook of medical physiology 12 edition page number:675,676,677
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