When a muscle is stimulated repeatedly so that it cannot completely relax between contractions,_________ occurs.
A) muscle fatigue
B) complete tetanic contraction
C) summation
D) peristalsis

Question

Quizplus · Accepted Answer

When a muscle is stimulated repeatedly without enough time to relax, it undergoes summation, which leads to an increase in the force of contraction. If the stimulation continues, the muscle may eventually reach a state of complete tetanic contraction or muscle fatigue, depending on the intensity and duration of the stimulation. Peristalsis, on the other hand, is a wave-like contraction of smooth muscles that propels substances through hollow organs such as the digestive tract.

When a Muscle Is Stimulated Repeatedly So That It Cannot