What Happens to an Action Potential at an Excitatory Synapse

question 351

Multiple Choice

What happens to an action potential at an excitatory synapse?

• A)The postsynaptic neuron depolarizes the presynaptic cell membrane.
• B)The presynaptic neuron increases the permeability of the subsynaptic membrane of the postsynaptic cell to both Na⁺ and K⁺.
• C) The presynaptic neuron increases the permeability of the subsynaptic membrane of the postsynaptic cell to K⁺ only.
• D) A small hyperpolarization occurs.

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Definitions:

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