Answer
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Work Step by Step
A quick and short electrical signal called an action potential moves up the axon of a neuron. The passage of ions across the neural membrane, which is permeable to some ions only, is what gives an action potential its ionic basis. Positively charged sodium ions enter a neuron upon stimulation, which results in depolarization. More sodium ions can enter and help the action potential spread down the axon because this causes voltage-gated ion channels to open. As neurotransmitters are released at the synapse as a result of the action potential traveling down the axon, the following neuron in the circuit may be activated or inhibited.
