MUSCLE PHYSIOLOGY

Detailed explanation-1: -A sarcomere (Greek sarx “flesh", meros “part") is the smallest functional unit of striated muscle tissue. It is the repeating unit between two Z-lines. Skeletal muscles are composed of tubular muscle cells (called muscle fibers or myofibers) which are formed during embryonic myogenesis.

Detailed explanation-2: -A sarcomere is a muscle fiber’s basic contractile unit. Actin and myosin, the active components that cause muscle contraction, are found in each sarcomere. The sarcomere is made up of half of each adjacent I-band and A-band. The functional unit of myofibril is the sarcomere.