Solve this
Explain.
Q.19. The cross arm that forms the cross bridge during muscle contraction is formed by
(a) HMM
(b) LLM
(c) Troponin
(d) Both 1 and 2

Dear student

The correct option is a).
HMM (Heavy meromyosin) forms cross bridge during contraction of muscles. ​HMM is a protein chain that terminates into globular head forming cross bridge.



​Regards