When the neurotransmitter binds to a receptor site it can cause:
A) excitation followed by inhibition.
B) inhibition followed by excitation.
C) a neural impulse.
D) excitation or inhibition.

Question

Quizplus · Accepted Answer

When a neurotransmitter binds to a receptor site, it can either excite or inhibit the cell. Therefore, the best choice is D, which states that the neurotransmitter can cause excitation or inhibition. Choices A and B are incorrect because they imply a specific sequence of events, which is not always the case. Choice C is incorrect because the neurotransmitter binding to the receptor site does not always generate a neural impulse; it depends on the context of the synaptic activity.

When the Neurotransmitter Binds to a Receptor Site It Can