Presynaptic nicotinic acetylcholine receptors

Question

Quizplus · Accepted Answer

Presynaptic nicotinic acetylcholine receptors typically cause an increase in the amount of neurotransmitter released. This occurs because activation of these receptors leads to an influx of calcium, which promotes vesicle fusion and release of neurotransmitter. Option A is incorrect because presynaptic nicotinic acetylcholine receptor activation typically causes depolarization, not hyperpolarization. Option B is incorrect because presynaptic nicotinic acetylcholine receptor activation typically results in an increase, not a decrease, in neurotransmitter release.

Presynaptic Nicotinic Acetylcholine Receptors