1.6 Nerve impulses are transmitted from the end of one axon to the beginning of

Question

1.6 Nerve impulses are transmitted from the end of one axon to the beginning of the next by the release ofneurotransmitters. These are chemicals that cause a modest change in the potential across any nearby axon membrane, including that of the signaling nerve. Consider the features of the action potential. The neurotransmitters released by the signaling nerve do not trigger a return action potential that would run back along the same axon from which the signal came. In light of this observation, how much of a change in potential can these neurotransmitters induce, and for how long? Your answer should be based solely on the model and information provided here, and not from the much more complicated scenarios described on the internet, in articles, and in books.

Explanation / Answer

As soon as the neurotransmitters are released from the axon terminal it binds to the receptors present on the post synaptic membrane of the dendritic arbor of another neuron. At the same time action potential and opening of voltage gated ion channels open and helps transmit the nerve impulse. At the same time, action potential generated with the opening of voltage gated ion channels. The nerve impulse transmits across the membrane when the membrane potential reaches the threshold potential at -50mV. This is rapid process. It may stay for 1/1000 of a second.

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