A physiology experiment is conducted in which a skeletal muscle twitch is initiated with an electrical stimulator. Which factor contributes to the termination of a typical skeletal muscle twitch?
A)Calcium uptake by sarcoplasmic reticulum
B)Closure of transverse tubules
C)Depletion of calcium stores from sarcoplasmic reticulum
D)Exhaustion of muscle adenosine triphosphate stores
E)Stimulation of dihydropyridine (DHP) receptors

Question

Quizplus · Accepted Answer

Calcium uptake by the sarcoplasmic reticulum is crucial for the termination of a skeletal muscle twitch. This process reduces the cytosolic calcium concentration, leading to the detachment of myosin from actin and thus muscle relaxation.

A Physiology Experiment Is Conducted in Which a Skeletal Muscle