GENERAL HISTOLOGY

Detailed explanation-1: -Skeletal muscles contract and relax to mechanically move the body. Messages from the nervous system cause these muscle contractions.

Detailed explanation-2: -Muscles move body parts by contracting and then relaxing.

Detailed explanation-3: -The extensor muscle relaxes and stretches as the flexor muscle contracts to bend the joint. The flexor relaxes and the extensor contracts to straighten (or extend) the limb at the same joint. Muscles get their signals to contract and relax from the brain.

Detailed explanation-4: -Skeletal muscle – the specialised tissue that is attached to bones and allows movement. Together, skeletal muscles and bones are called the musculoskeletal system (also known as the locomotor system).

Detailed explanation-5: -The neuromuscular system includes all the muscles in the body and the nerves serving them. Every movement the body makes requires communication between the brain and the muscles. The nervous system provides the link between thoughts and actions by relaying messages from the brain to other parts of the body.