Calcium binding to ___________initiates skeletal muscle contraction.
A) troponin
B) tropomyosin
C) actin
D) myosin

Question

Quizplus · Accepted Answer

Calcium ions bind to troponin during the initiation of skeletal muscle contraction. This binding causes a conformational change in the troponin complex, leading to the movement of tropomyosin away from the myosin-binding sites on actin filaments, thereby allowing myosin heads to bind to actin and initiate contraction.

Calcium Binding to ___________Initiates Skeletal Muscle Contraction