Neural Control and CoordinationHard

Question

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

Options

A.nerve fibre is insulated by a medullary shesth.
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 dendrits.

Solution

Transmission of nerve impulse is always from axon of neuron to the dendrite of an other neuron i.e. unidirectional because neurotransmitters are produced by axons and not by dendrites.

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