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Muscular System Anatomy, Diagram & Function. Without muscle, humans could not live.
The primary job of muscle is to move the bones of the skeleton, but muscles also enable the heart to beat and constitute the walls of other important hollow organs. There are three types of muscle tissue: 3D Models of the Human Anatomy. The visible human project (HQ) Space Shuttle Discovery - 360VR Images. Stellarium.
Space Science. Visible Human Project.