There are over 600 muscles in the human body, the muscular system has many functions. Identify and describe the main functions of the muscular system in the box
below:

Some main functions of the muscular system are mobility, stability, posture, circulation, respiration, digestion, urination, childbirth, vision, organ protection, and temperature regulation.

Explanation:

1. Mobility: The muscular system’s main function is to allow movement. When muscles contract, they contribute to gross and fine movement. (Gross movement refers to large, coordinated motions like walking, running, and swimming.

2. Stability: Muscle tendons stretch over joints and contribute to joint stability. Muscle tendons in the knee joint and the shoulder joint are crucial in stabilization.

3. Posture: Skeletal muscles help keep the body in the correct position when someone is sitting or standing. This is known as posture.

4. Circulation: The heart is a muscle that pumps blood throughout the body. The movement of the heart is outside of conscious control, and it contracts automatically when stimulated by electrical signals.

5. Respiration: Breathing involves the use of the diaphragm muscle.

6: Digestion: Smooth muscles in the gastrointestinal or GI tract control digestion. The GI tract stretches from the mouth to the anus.

7: Urination: The urinary system comprises both smooth and skeletal muscles.

8: Childbirth: Smooth muscles in the uterus expand and contract during childbirth. These movements push the baby through the vagina. Also, the pelvic floor muscles help to guide the baby’s head down the birth canal.

9: Vision: Six skeletal muscles around the eye control its movements. These muscles work quickly and precisely.

10: Organ Protection: Muscles in the torso protect the internal organs at the front, sides, and back of the body. The bones of the spine and the ribs provide further protection. Muscles also protect the bones and organs by absorbing shock and reducing friction in the joints.

11. Temperature Regulation: Maintaining normal body temperature is an important function of the muscular system. Almost 85 percent of the heat a person generates in their body comes from contracting muscles.

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