The nervous system can alter the activities of skeletal muscle fibers 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 nervous system can alter the activities of skeletal muscle fibers because its signals bind to receptor proteins on the muscles, leading to the opening of ion channels and the initiation of muscle contraction. Gap junctions and blood are not typically involved in the signaling between the nervous system and skeletal muscles, and light pulses are not capable of activating muscle contraction. While the internal neural network of the muscles does play a role in muscle function, it is not directly connected to the nervous system.

The Nervous System Can Alter the Activities of Skeletal Muscle