Question

6. The contractile unit consisting of bundles of thick filaments interleaved at either end with those of thin
filaments is
(A) Myofibril
(B) Cross bridges
(C) Z band
(D) Sarcomere​

Answer 1

The contractile unit consisting of bundles of thick filaments interleaved at either end with those of thin  filaments is sacromere.

Option (d) is correct.

Explanation:

• A sarcomere is a unit of contractile and is composed of actin and myosin which are two main protein filaments.
• Adjacent sarcomeres combine to form  Z lines which are also known as 2-Z bands.
• It is a unit of striated muscle tissue and a repeating unit between Z lines.
• Skeletal muscle is made up of tubular muscles and are