Refer to the Figure Showing a Neuromuscular Junction

question 102

Multiple Choice

Refer to the figure showing a neuromuscular junction. Which cellular event is paired correctly with the location where it occurs?

• A) At position 2, calcium ions trigger fusion of vesicles with the presynaptic membrane.
• B) At position 3, voltage-gated calcium channels open.
• C) At position 4, acetylcholine molecules diffuse across the synaptic cleft and bind to receptors on the postsynaptic membrane.
• D) At position 6, acetylcholine is broken down and the components are recycled.
• E) At position 7, neurotransmitter is released.

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