SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
William Harvey. Historical portrait of the English physician William Harvey (1578-1657). Harvey is considered the founder of modern physiology for his work on the circulation of the blood. He used dissection and experimentation to demonstrate that blood is circulated around the body by the pumping action of the heart. This contradicted the beliefs of the previous 1300 years, that blood oscillates back and forth in the blood vessels. He published these views in a celebrated treatise of 1628. He also conducted notable embryological research, proposing that all life forms originate from an egg. He was royal physician to king James I from 1618 and Charles I from 1640.
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