In skeletal muscle, a single action potential causes a minimum unit of contraction called
A) tetanus.
B) tension.
C) twitch.
D) summation.
E) tone.

Question

Quizplus · Accepted Answer

A single action potential in skeletal muscle causes a twitch, which is a brief contraction and relaxation of muscle fibers. Tetanus refers to sustained contraction, tension is the force exerted by the muscle, summation is the addition of multiple twitches to produce a sustained contraction, and tone refers to the continuous low-level contraction of muscle fibers even at rest.

In Skeletal Muscle, a Single Action Potential Causes a Minimum