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Erasistratus |
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Erasistratus (ĕrəsĭs`trətəs), fl. 3d cent. B.C., Greek physician, b. Chios. He was the leader of a school of medicine in Alexandria, and his works were influential until the 4th cent. A.D. He considered plethora (hyperemia) to be the primary cause of disease. As opposed to the then current belief in the humors humor, according to ancient theory, any of four bodily fluids that determined man's health and temperament. Hippocrates postulated that an imbalance among the humors (blood, phlegm, black bile, and yellow bile) resulted in pain and disease, and that good health was ..... Click the link for more information. , he suggested that air carried from the lungs to the heart is converted into a vital spirit distributed by the arteries. He developed a reverse theory of circulation (veins to arteries). Studying from dissections, he observed the convolutions of the brain, named the trachea, and distinguished (as did his contemporary Herophilus) between motor and sensory nerves. He also devised a catheter and a calorimeter. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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In the first, he surveys the history of anatomy, in order to show that Renaissance anatomists not only did not reject the authority of the Greeks, but that each of three major sixteenth-century Italian writers in the field aimed literally to revive the investigative program of a different Greek predecessor or predecessors: Galen, in the case of Vesalius; Herophilos and Erasistratos, in the case of Realdo Colombo; and Aristotle, in the case of Girolamo Fabrizi. In the first, he surveys the history of anatomy, in order to show that Renaissance anatomists not only did not reject the authority of the Greeks, but that each of three major sixteenth-century Italian writers in the field aimed literally to revive the investigative program of a different Greek predecessor or predecessors: Galen, in the case of Vesalius; Herophilos and Erasistratos, in the case of Realdo Colombo; and Aristotle, in the case of Girolamo Fabrizi. |
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