What is the role of muscles in the movement of body parts? or How do muscles work?
Answers
Explanation:
Role:
Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction. ... In addition to movement, muscle contraction also fulfills some other important functions in the body, such as posture, joint stability, and heat production.
Working:
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:
by contracting and then relaxing
Muscles are attached to bones by tendons and help them to move.
Explanation:
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.
Muscles are attached to bones by tendons and help them to move. When a muscle contracts (bunches up), it gets shorter and so pulls on the bone it is attached to. When a muscle relaxes, it goes back to its normal size. Muscles can only pull and cannot push.