The functional unit of contractile system in a striated muscle is

Question

The functional unit of contractile system in a striated muscle is (A) sarcomere (B) Z-band (C) cross bridges (D) myofibril

Tardigrade Admin · Accepted Answer

Sarcomere is the functional unit of myofibril. It contains two types of protein filaments called actin and myosin. These filaments slide upon each other to bring about the contraction of the muscles.

Q. The functional unit of contractile system in a striated muscle is

sarcomere

$Z$ -band

cross bridges

myofibril

Sarcomere is the functional unit of myofibril. It contains two types of protein filaments called actin and myosin. These filaments slide upon each other to bring about the contraction of the muscles.