MUSCLE PHYSIOLOGY

Detailed explanation-1: -A sarcomere is the basic contractile unit of a myocyte (muscle fibre). A sarcomere is composed of two main protein filaments (thin actin and thick myosin filaments) which are the active structures responsible for muscular contraction.

Detailed explanation-2: -The smallest contractile unit in striated muscles is the sarcomere.

Detailed explanation-3: -Sarcomeres are the smallest functional contractile unit of muscle, and myofibrils are striated muscle organelles that are comprised of sarcomeres that are strictly aligned in series.

Detailed explanation-4: -The sarcomere, which is the smallest contractile unit of the muscle, is delimited by the Z disks. It consists of at least thirty different proteins, of which the most abundant are myosin and actin. Skeletal muscle consists of several tissues, such as muscle fibers and connective and adipose tissues.