Friday, February 12, 2010

The Circulatory System

Circulatory System:
The heart pumps blood to the lungs. Then it pushes the blood all through the body to deliver oxygen and collect waste. Blood carrying waste from the body cells is drawn through large veins, called the vena cavae, into the right side of the heart. Then the blood is pumped through pulmonary arteries to the lungs. Here it collects oxygen, and is pumped back through pulmonary veins to the left side of the heart.The heart then pumps the oxygen-rich blood out through the main artery, called the aorta. From here, it travels round the body.

Credits:
Circulatory System (page 9), Name: The Human Body (A fascinating see-through view of how our bodies work), Author: Dr. Peter Abrahams, University College London, Text Consultant: Dr. Luisa Dillner, Medical Advisor: Dr. Tom Snow, published in Australia in 1993 by Wishing Well Books, 67 Rushdale Street, Knoxfield, Victoria, 3180.

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