Dystrophin, the protein that is affected by muscular dystrophy, normally acts to
A) protect muscle fiber membranes during movement.
B) clear the interior of muscle fibers of excess calcium.
C) allow myosin and actin to interact during muscle contraction.
D) protect muscle spindles from too much stretching during movement.

Question

Quizplus · Accepted Answer

Dystrophin acts as a protective shield over the membrane of muscle fibers, particularly during contraction and relaxation. This protects the integrity of the muscle fiber and prevents damage.

Dystrophin, the Protein That Is Affected by Muscular Dystrophy, Normally