When an excitatory neurotransmitter binds to a postsynaptic neuron A) Voltage-gated Na⁺ channels open. B) Voltage-gated K⁺ channels open. C) Chemically-gated Na⁺ channels open. D) Voltage-gated Cl^- channels open. E) Chemically-gated Cl^- channels open.

Question

Quizplus · Accepted Answer

Excitatory neurotransmitters bind to chemically-gated ion channels, specifically Na+ channels. This causes an influx of Na+ ions into the postsynaptic neuron, depolarizing the membrane potential and potentially triggering an action potential.

When an Excitatory Neurotransmitter Binds to a Postsynaptic Neuron