In a neuromuscular junction,
A) the presynaptic terminal is separated from the postsynaptic terminal by the synaptic cleft.
B) the presynaptic terminal contains vesicles filled with sodium ions.
C) the presynaptic terminal contains receptor molecules for the neurotransmitter.
D) the neurotransmitter causes an action potential in the presynaptic terminal.
E) all of these conditions occur.

Question

Quizplus · Accepted Answer

The presynaptic terminal is separated from the postsynaptic terminal by the synaptic cleft. None of the other statements are true. The presynaptic terminal contains vesicles filled with neurotransmitters, not sodium ions. The presynaptic terminal does not contain receptor molecules for the neurotransmitter, but the postsynaptic terminal does. The neurotransmitter does not cause an action potential in the presynaptic terminal, but it can trigger an action potential in the postsynaptic terminal.

In a Neuromuscular Junction