Unidirectional transmission of a nerve impuls | vedclass

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(D) The transmission of a nerve impulse across a synapse is unidirectional because neurotransmitters are stored in synaptic vesicles located only at t

Vedclass · Accepted Answer

Neurotransmitters are released by the axon endings and not by dendrites

Vedclass · Answer

(D) The transmission of a nerve impulse across a synapse is unidirectional because neurotransmitters are stored in synaptic vesicles located only at the axon terminals (presynaptic knobs).When an action potential reaches the axon terminal,it triggers the release of these neurotransmitters into the synaptic cleft.Dendrites possess receptors for these neurotransmitters but do not contain synaptic vesicles to release them.Therefore,the impulse can only travel from the axon of one neuron to the dendrite or cell body of the next neuron,ensuring unidirectional flow.

Unidirectional transmission of a nerve impulse through a nerve fibre is due to the fact that

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