Troponin and tropomyosin regulate
A) calcium storage and release.
B) actin and myosin interactions.
C) action potential transmission.
D) acetylcholine storage and release.
E) rate of muscle fiber division.

Question

Quizplus · Accepted Answer

Troponin and tropomyosin are regulatory proteins that control the interactions between actin and myosin, the two main proteins involved in muscle contraction. They work together to regulate when and how muscle fibers contract by responding to changes in calcium ion concentration, thereby controlling the actin-myosin interactions necessary for muscle contraction.

Troponin and Tropomyosin Regulate