ANATOMY

Detailed explanation-1: -The neuromuscular junction accomplishes this by turning the electrical signal from the nervous system into a chemical signal that can be moved across the synaptic cleft. The chemical in this case is acetylcholine (ACh), an example of a neurotransmitter that allows neurons to communicate with other cells.

Detailed explanation-2: -In vertebrates, motor neurons release acetylcholine (ACh), a small molecule neurotransmitter, which diffuses across the synaptic cleft and binds to nicotinic acetylcholine receptors (nAChRs) on the cell membrane of the muscle fiber, also known as the sarcolemma.

Detailed explanation-3: -Acetylcholine is a small molecule that acts as a chemical messenger to propagate nerve impulses across the neuromuscular junction between a nerve and a muscle.

Detailed explanation-4: -In the somatic nervous system, acetylcholine is used at the neuromuscular junctions, triggering the firing of motor neurons and affecting voluntary movements.

Detailed explanation-5: -Acetylcholine is released into the synaptic cleft, the space between the motor neuron terminal and the muscle fiber. Now there’s a high concentration of acetylcholine near the motor neuron and a low concentration near the muscle fiber. So the acetylcholine diffuses across the synaptic cleft towards the muscle fiber.