The Rising Phase of a Muscle Twitch Represents

Question

The rising phase of a muscle twitch represents .
A) the time of relaxation of the muscle fibers
B) the time of shortening of the sarcomeres of the muscle fibers
C) the time between stimulus and active muscle contraction

Accepted Answer

The rising phase of a muscle twitch represents the period during which the sarcomeres of the muscle fibers are actively shortening, leading to muscle contraction.