MUSCLE PHYSIOLOGY

Detailed explanation-1: -This process is known as myosin-actin cycling. As the myosin S1 segment binds and releases actin, it forms what are called cross bridges, which extend from the thick myosin filaments to the thin actin filaments. The contraction of myosin’s S1 region is called the power stroke (Figure 3).

Detailed explanation-2: -The sliding filament theory explains the process of muscle contraction during which the thin filaments slide over the thick filaments, which shortens the myofibril. Each muscle fibre has an alternate light and dark band, which contains a special contractile protein, called actin and myosin respectively.

Detailed explanation-3: -With substantial evidence, Hugh Huxley formally proposed the mechanism for sliding filament which is variously called swinging cross-bridge model, cross-bridge theory or cross-bridge model.

Detailed explanation-4: -The sliding filament model describes the process used by muscles to contract. It is a cycle of repetitive events that causes actin and myosin myofilaments to slide over each other, contracting the sarcomere and generating tension in the muscle.

Detailed explanation-5: -The Relaxation Phase Of The Sliding Filament Theory Muscular relaxation happens when the stimulation of the motor nerve stops. Calcium returns back to the sarcoplasmic reticulum, which stops the binding process between actin and myosin.