Question

Question 6

How many muscles work together to move a bone?
(a) One
(b) Two
(c) Three
(d) Four

Answer 1

Option (b).

Two skeletal muscles work together to move a bone. When one muscle of the pair contracts, the other muscle is relaxed. The alternate contraction and relaxation of the muscles bring about the movement by enabling the bone to move in a specific direction.

For example, lifting a dumbbell - While lifting, the biceps contract, and the triceps relaxes.