The sliding filament mechanism of muscle contraction involves
A) collagen fibers sliding along actin filaments
B) myosin filaments sliding along collagen fibers
C) actin filaments sliding along myosin filaments
D) elastin fibers sliding along myosin filaments
E) myosin filaments becoming shorter and sliding along the actin

Question

Quizplus · Accepted Answer

The sliding filament mechanism of muscle contraction involves the actin filaments sliding along the myosin filaments, which results in the muscle fibers shortening and causing muscle contraction. The myosin filaments have cross-bridges that attach to the actin filaments and pull them closer together, which shortens the sarcomere and causes muscle contraction.

The Sliding Filament Mechanism of Muscle Contraction Involves