The system allows locomotion, grasping, manipulating the environment, facial expression and heat generation.

Muscular system.

Explanation:

The Human muscle system i.e. the muscles of the human body work is a system consisting of skeletal, smooth and cardiac muscles that are under voluntary control. The muscular system is composed of specialized cells called muscle fibers which its function is contractibility. It permits movement of the body, maintains posture and circulates blood throughout the body.

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