When a nerve impulse reaches the transmissive segment of a neuron,
A) calcium is pumped into the neuron and neurotransmitter diffuses out through channels.
B) calcium is released from the neuron along with neurotransmitter from synaptic vesicles.
C) calcium diffuses into the neuron and neurotransmitter is released by exocytosis.
D) calcium and neurotransmitter diffuse into the synaptic knob.
E) calcium is immediately pumped out of the neuron and vesicles of neurotransmitter undergo phagocytosis.

Question

Quizplus · Accepted Answer

When a nerve impulse reaches the transmissive segment, calcium ions diffuse into the neuron, triggering the release of neurotransmitters by exocytosis from synaptic vesicles.

When a Nerve Impulse Reaches the Transmissive Segment of a Neuron