Synaptic transmission multiple choice questions

Synaptic Transmission

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The diagram below refers to a synapse.

Diagram showing the structure of a synapse with labelled parts.

Which statement describes events occurring at a synapse?

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The diagram below refers to a synapse.

Diagram showing a synapse with neurotransmitters and ion channels.

GABA is a neurotransmitter. GABA reduces the number of action potentials in the postsynaptic neurone by opening chloride ion channels in the postsynaptic membrane.

Which statement describes the action of GABA?

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Neurotransmitters such as GABA are found at synapses within the human brain and are known as inhibitory neurotransmitters.

GABA binds to receptors in the postsynaptic membrane and causes potassium ion channels to open.

Why does this prevent an action potential in the postsynaptic neurone?

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What happens when neurotransmitter molecules bind to receptor sites on the postsynaptic neuron?

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What is the primary purpose of synaptic vesicles?

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During synaptic transmission, the opening of which ion channels directly triggers the release of neurotransmitter?

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What effect does the enzyme acetylcholinesterase have in the synapse?

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What is the consequence of the influx of sodium ions into the postsynaptic neuron?

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9 of 10

What determines the specific response of the postsynaptic neuron to a neurotransmitter?

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10 of 10

Which neurotransmitter is responsible for muscle movement?

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