What chemical compound do motor-neuron axon terminals release?
A)epinephrine
B)norepinephrine
C)nicotinic acid
D)acetylcholine
E)sodium ions

Question

What chemical compound do motor-neuron axon terminals release?
A)​epinephrine
B)norepinephrine
C)nicotinic acid
D)acetylcholine
E)​sodium ions

Quizplus · Accepted Answer

Motor-neuron axon terminals release acetylcholine, which binds to receptors on the postsynaptic membrane of the muscle fiber, resulting in muscle contraction. Epinephrine and norepinephrine are typically released by the sympathetic nervous system. Nicotinic acid is a form of vitamin B3 and not typically involved in neuromuscular signaling. Sodium ions are involved in the propagation of the action potential but are not released by the axon terminal.

What Chemical Compound Do Motor-Neuron Axon Terminals Release