At an Excitatory Synapse, an Action Potential in the

question 168

Multiple Choice

At an excitatory synapse, an action potential in the

• A) postsynaptic neuron depolarizes the presynaptic cell membrane.
• B) presynaptic neuron increases the permeability of the subsynaptic membrane of the postsynaptic cell to both Na⁺ and K⁺.
• C) presynaptic neuron increases the permeability of the subsynaptic membrane of the postsynaptic cell to K⁺ only.
• D) both (a) and (b) above.
• E) both (a) and (c) above.

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Definitions:

Riding

An electoral district or division, particularly in countries like Canada, used in the context of parliamentary elections.

Habituation

A decrease in response to a stimulus after repeated exposure, demonstrating a basic form of learning or adaptation.

Neural Fatigue

A temporary decrease in neural efficiency, leading to a decline in cognitive or physical performance due to prolonged activity.

Stimulus

Anything in the external or internal environment that elicits a response from an organism.