The motor (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) it is connected to the internal neural network of the muscles

Question

Quizplus · Accepted Answer

The motor (somatic nervous) system can alter the activities of its targets, the skeletal muscle fibres, because its signals bind to receptor proteins on the muscles, causing them to contract. The other options (A,C, and D) are not accurate explanations of the interaction between the nervous system and skeletal muscles.

The Motor (Somatic Nervous) System Can Alter the Activities of Its