What is a nanodomain of presynaptic calcium ions?
A) The intracellular calcium ions that fill the presynaptic nerve terminal
B) The intracellular calcium ions that are pumped out of the presynaptic nerve terminal
C) The intracellular calcium ions that diffuse into the synaptic cleft
D) The collected intracellular calcium ions that form around the mouth of a collection of open calcium channels
E) The collected intracellular calcium ions that form around the mouth of a single open calcium channel
Correct Answer:
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