Which of the Following Activates the NM Receptors Within the Neuromuscular

Question

Which of the following activates the NM receptors within the neuromuscular junction?
A) Acetylcholinesterase
B) Calcium
C) Troponin
D) ACh

Accepted Answer

The neurotransmitter acetylcholine (ACh) is the only substance listed that activates the NM (neuromuscular) receptors within the neuromuscular junction, thereby triggering muscle contraction. Acetylcholinesterase is responsible for breaking down ACh and thus terminating muscle contraction, while calcium and troponin are involved in regulating the action potential and contraction process within the muscle cell itself.