The two principal contractile proteins found in skeletal muscle are
A)actin and troponin.
B)actin and myosin.
C)troponin and tropomyosin.
D)myosin and tropomyosin.

Question

Quizplus · Accepted Answer

The two principal contractile proteins found in skeletal muscle are actin and myosin. Actin is a thin filamentous protein that interacts with myosin to generate muscle contraction. Myosin is a thick filamentous protein that contains specialized "heads" which "walk" along the actin filaments, resulting in muscle contraction. Troponin and tropomyosin are regulatory proteins that help control the interaction between actin and myosin.

The Two Principal Contractile Proteins Found in Skeletal Muscle Are