How are each of these statments incorrect and why? a) an action potential is a r

Question

How are each of these statments incorrect and why?

a) an action potential is a rapid change in membrane potential depolarization followed by repolarization) that occurs over the surface of the entire neuron.

B) when an action potential has been generated, propagation of the signal entails diffusion of the action potential along the axon.

C) Arrival of the signal at the end of axon results in release of vesicles containing neurotransmitter molecules; the vesicles diffuse across the synaptic cleft and fuse with the post synaptic membrane.

Explanation / Answer

A) Action potential is a transient change in the polarity of the membrane, during which first the membrane depolarization occurs followed by repolarization,

B) when the action potential is generated, inward movement of Na+ into the axon after opening of the Na+ channels. Propagation of the signal occurs down the action

C)Depolarization of the axon terminals triggers the release of the nurotransmitter in to the synaptic cleft

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