Answer:
1. The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. 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.
2.Skeletal muscles enable humans to move and perform daily activities. They play an essential role in respiratory mechanics and help in maintaining posture and balance. They also protect the vital organs in the body.
3. Smooth muscle is found in the walls of hollow organs like your intestines and stomach. ... Smooth muscles are involved in many 'housekeeping' functions of the body. The muscular walls of your intestines contract to push food through your body. Muscles in your bladder wall contract to expel urine from your body.
