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200
start point - Galen
Doctor in Rome - Said blood passes through the septum, and the heart pumps it to the muscles, where it is burned up. -
Jan 1, 1250
Nafis
Persian doctor - Said blood does not go through the septum, and is pumped past the lungs. -
Jan 1, 1519
Leonardo da Vinci
Artist - Made detailed drawings of the anatomy of the heart. -
Jan 1, 1543
Vesalius
Professor at Padua - Said blood does not pass through the septum. -
Jan 1, 1553
Servetus
Italian preacher - Said blood does go through the septum, and is pumped past the lungs. -
Jan 1, 1559
Columbo
Professor at Padua - Said blood does not go through the septum, and is pumped past the lungs. -
Mar 10, 1571
Caesalpino
Professor at Pisa - First used the word 'circulation' in relation to blood, but could not explain the process. -
Fabricius
Professor at Padua - Discovered valves in the veins only allow the blood to go one way. -
William Harvey - End point
London doctor - Proved that blood circulates round the body, and described how it happened.