Vesicles containing neurotransmitters are located in
A) a synaptic cleft.
B) axon terminals.
C) the postsynaptic region of dendrites.
D) the nodes of Ranvier.

Question

Quizplus · Accepted Answer

Vesicles containing neurotransmitters are located in the axon terminals, which are the end points of axons that form connections with other cells, such as neurons or muscle cells. When an action potential reaches the axon terminal, it triggers the release of neurotransmitters from these vesicles into the synaptic cleft, the small space between the axon terminal and the target cell. Thus, option B is the correct choice. The other options are not correct because the synaptic cleft and postsynaptic region of dendrites are not locations for vesicles containing neurotransmitters, and the nodes of Ranvier are regions of myelinated axons that lack vesicles altogether.

Vesicles Containing Neurotransmitters Are Located in