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Circulatory system HTML5

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Summary

The body's circulatory system has two distinct parts; pulmonary circulation (Lungs) and systemic circulation (other organs). Blood flows in one direction through the blood vessels – arteries, veins, capillaries – forming a closed system that irrigates all of the body’s organs. The heart and its coronary circulation (not represented here) is the central organ of this system, which, via the rhythmic pumping of the heart, makes about 5 liters of blood continually travel through the body’s blood vessels.

Learning goals

  • To illustrate the flow of blood driven by the heart, in one direction only within a closed system of blood vessels, that forms two systems of vessels – the pulmonary system and the systemic system. 

Learn more

To live and move, an organism needs oxygen. This oxygen is carried to the body’s organs by the blood by way of a network of blood vessels made up of arteries and veins. The central motor that…

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