Synaptic vesicles in the neuromuscular junction contain

A) calcium.
B) ATP.
C) acetylcholine.
D) acetylcholinesterase.
E) sodium.

Synaptic Vesicles

Small sacs in the presynaptic terminal of neurons that store neurotransmitters, which are released into the synaptic cleft during neurotransmission.

Neuromuscular Junction

The synapse or point of contact between a motor neuron and a muscle fiber, through which signals are transmitted to cause muscle contraction.

Acetylcholine

A neurotransmitter in both the peripheral and central nervous system that plays a key role in muscle activation and various cognitive functions.