Motor neurons alter skeletal muscle activities by releasing neurotransmitters because
A)they are electrically coupled by gap junctions to the muscles.
B)their signals bind to receptor proteins on the muscles.
C)their signals reach the muscles via the blood.
D)their light pulses activate contraction in the muscles.
E)they are connected to the internal neural network of the muscles.

Question

Quizplus · Accepted Answer

Motor neurons alter skeletal muscle activities by releasing neurotransmitters that bind to receptor proteins on the muscles. This binding triggers a series of events that ultimately leads to muscle contraction. The neurotransmitter most commonly released by motor neurons is acetylcholine, which binds to nicotinic acetylcholine receptors on the muscle cell membrane.

Motor Neurons Alter Skeletal Muscle Activities by Releasing Neurotransmitters Because