Sliding filament theory can be best explained as

Options

A. Actin and Myosin filaments shorten and slide pass each other
B. Actin and Myosin filaments do not shorten but rather slide pass each other
C. When myofilaments slide pass other, Myosin filaments shorten while actin filaments do not shorten
D. When myofilaments slide pass each other actin filaments shorten while myosin filament do not shorten

Answer

B

Explanation

Sliding filament theory was proposed by A.E Huxley and Niedergerke. According to muscle contraction myosin attaches to actin filament and sarcomere shortens. However the length of actin and myosin filaments do not changes.