Consequences of Neurotransmitter Release

Hard Unit 2: Biological Bases Neural Communication

In the context of neural communication, synaptic transmission is a critical process that involves the release of neurotransmitters. When an action potential reaches the axon terminal of a neuron, it triggers the opening of voltage-gated calcium channels. This influx of calcium ions facilitates the fusion of synaptic vesicles with the presynaptic membrane, leading to the release of neurotransmitters into the synaptic cleft.

Which of the following accurately describes a consequence of neurotransmitter release upon reaching the postsynaptic neuron?

It leads to the immediate reactivation of the presynaptic neuron.

It may inhibit neuron firing by hyperpolarizing the postsynaptic membrane.

It causes a decrease in the activation of ligand-gated ion channels on the postsynaptic neuron.

It guarantees that the postsynaptic neuron will fire an action potential.

It prevents the uptake of neurotransmitters by transporters in the presynaptic cell.

Hint

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