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The Hunger Project Bolen Report
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Circulatory System Print E-mail

Dr. Kennedy The circulatory system moves blood throughout the body. The circulatory system is composed of the heart, arteries, capillaries, and veins. This remarkable system transports oxygenated blood from the lungs and heart throughout the body via the arteries. The blood goes through the capillaries which are situated between the arteries and veins. And the blood that has been depleted of oxygen by the body is then returned to the lungs and heart via the veins. William Harvey (1578-1657), the great English physician, discovered the circulation of blood and the role of the heart in propelling it. He came to his conclusions by performing dissections and by studying blood flow in live animals, and also by performing actual experiments (before that, people believed that speculations alone were sufficient). Harvey's findings were published in 1628 in his book, Exrcitatio Anatomica de Motu Cordis et Sanguinis in Animalibus (Anatomical Essay on the Motion of the Heart and Blood in Animals). Harvey was incapable of observing capillaries but proposed the existence of tiny vessels which connect the arterial and venous networks of the vessels.



The information in this article is not meant to be medical advice.�Treatment for a medical condition should come at the recommendation of your personal physician.

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