The somatic nervous system can alter the activities of its targets, the skeletal muscle fibres, because
A)it is electrically coupled by gap junctions to the muscles.
B)its signals bind to receptor proteins on the muscles.
C)its signals reach the muscles via the blood.
D)its light pulses activate contraction in the muscles.
E)it is connected to the internal neural network of the muscles.

Question

Quizplus · Accepted Answer

The somatic nervous system alters the activities of skeletal muscle fibers by using acetylcholine as a neurotransmitter to bind to and activate nicotinic receptors on the muscle fibers. This binding triggers a series of events that result in muscle contraction.

The Somatic Nervous System Can Alter the Activities of Its