The human body is one of the most studied, but least understood biochemical miracles in the universe. Modern medical scientists tell us our bodies are made up of 12 separate systems that amazingly work together to keep us alive. They can’t tell us exactly how it all works to allow for survival.
The external covering of the body, comprised of the skin, hair, nails, sweat glands and their products (sweat and mucus).
Largest organ system.
consists of individual or fused bones supported and supplemented by ligaments, tendons, muscles and cartilage.
The biological system of an organism that allows it to move.
The muscular system in humans is controlled through the nervous system, although some muscles (such as the cardiac muscle) can be completely autonomous.
The body's information gatherer, storage center and control system.
Its overall function is to collect information about the external conditions in relation to the body's internal state, to analyze this information, and to initiate appropriate responses to satisfy certain needs.
A control system of ductless glands that secrete hormones that circulate within the body via the bloodstream to affect cells within specific organs.