Question

Answer the question given below : c. How do we move our body parts?​

Answer 1

Answer:

Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.

Answer 2

Answer:

Muscles move body parts by contracting and then relaxing. Muscles can pull bones but can't push them back to their original position. So they work in pairs of flexors and extensors. Flexors are a muscle whose contraction bends a limb or other part of the body. The flexor contracts to bend a limb at a joint. Then, when the movement is completed, the flexor relaxes and the extensor contracts to extend or straighten the limbs at the same joint.