Question

How do muscles cause the movement of body parts?

Answer 1

Role of muscles in the movement of body parts:

1. Muscles are essentially attached to blood vessels, bones, and other internal organs.
2. They are composed of special kinds of elastic tissue, tendons, nerves, and tissues.
3. Their elasticity provides a capability for articulation, stretching, bending, and motion.
4. Muscle tissue consists of cells that have the unique potential to shorten so that it will produce motion of the body parts.
5. The tissue is relatively mobile and is well provided with blood vessels.
6. Actin and myosin along with the regulatory proteins known as troponin, tropomyosin, and meromyosin, cause contraction of the muscle in both humans and animals.
7. Myosin converts chemical energy released from ATP into mechanical energy, which is used to pull the actin filaments along, causing muscle fibres to contract and, thus, generating movement.