Question

_______ muscles are required to move one bone.

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is B 2

Two muscles are required to move one bone at a time. Muscles can contract and relax. When a muscle contracts, it pulls the bone to which it is attached. Muscles can only pull a bone. when a muscle relax, it takes bone back to its position. So, two muscles are required to move a bone. For example, two muscles called biceps and triceps is required to bend your arm.