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  • Harvey
    • he built on the work of Versalius
      • Versalius had shown Galen was wrong about the heart
        • Harvey proved how the heart and circulation worked
          • he showed that the heart was a pump
            • he showed that the blood went one way round the body
              • he done this through clever experiments
                • he dissected cold blooded animals like lizards who have a slow heartbeat
                  • he showed that blood could only travel one way round the body
                    • he proved it by pouring liquid through arteries and veins
                      • he said there must be tiny blood vessels (capillaries) but he could not prove this because there were no microscopes


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