At the Neuromuscular Junction, the Electrical Signal of the Nerve

Question

At the neuromuscular junction, the electrical signal of the nerve .
A) causes the axon terminal to release Na+ and K+
B) stimulates formation of the neurotransmitter acetylcholine (ACh)
C) causes the axon terminal to release acetylcholine (ACh)
D) is sent directly to muscle

Accepted Answer

At the neuromuscular junction, the electrical signal (action potential) arriving at the axon terminal of a motor neuron causes the release of the neurotransmitter acetylcholine (ACh) into the synaptic cleft, which then binds to receptors on the muscle cell membrane, leading to muscle contraction.