MEDICAL 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: -Depicted in Figure 1 is the sarcomere, which is the basic contractile unit of striated muscle. Sarcomeres are organized in series to make up a myofibril.

Detailed explanation-3: -To say that the sarcomere is the functional unit means that all the components needed for contraction are contained within each sarcomere. In fact, muscle is composed of millions of tiny sarcomeres, and each sarcomere shortens, thus resulting in muscular contraction.

Detailed explanation-4: -Answer and Explanation: The smallest contractile unit of a skeletal muscle is called a sarcomere.

Detailed explanation-5: -The functional unit of skeletal muscle is the sarcomere. A contractile fiber within a muscle cell is known as a myofibril. A sarcomere is the smallest unit of a myofibril that is capable of contraction. Thus, it is the smallest contractile unit of skeletal muscle or a functional unit of skeletal muscle.