Neurotransmitter Release Mechanism

Very Hard Unit 2: Biological Bases Neural Communication

Neural communication is a complex process involving the transmission of signals throughout the nervous system. One pivotal aspect of this communication is the process of neurotransmitter release at the synapse. When a neuron is activated, an action potential travels down its axon and triggers neurotransmitter release into the synaptic cleft. However, the specifics of this transmission can involve different types of channels and mechanisms. Consider the following question: Which of the following statements accurately describes the mechanism by which neurotransmitters are released into the synaptic cleft?

Neurotransmitters are transported through the axon using passive diffusion.

Release of neurotransmitters occurs through voltage-gated ion channels that open upon depolarization.

Neurotransmitter release is exclusively mediated by ligand-gated ion channels.

Neurotransmitters are released via a process of osmosis across the membrane.

The release of neurotransmitters requires the synthesis of vesicles in the nucleus.

Hint

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