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Setting the Scene
📖 Setting the Scene
For 1,400 years, doctors believed Galen's theory: blood was made in the liver, flowed to organs where it was "used up," and new blood was constantly produced. In 1628, English physician William Harvey proved this was completely wrong. Through careful experiments — tying off veins, measuring heart output — he showed that the same blood circulates around the body, pumped by the heart. The liver couldn't possibly make enough blood to match what the heart pumped. It was one of the most important discoveries in medical history.
What does blood circulation mean?: The same blood circulates continuously around the body, pumped by the heart — it is not made in the liver and 'used up' (as Galen believed)
History glossary
- What does blood circulation mean?
- The same blood circulates continuously around the body, pumped by the heart — it is not made in the liver and 'used up' (as Galen believed)
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📝 Exam Technique: Harvey = Proof But Not Treatment
Key point for essays: Harvey's discovery didn't immediately help patients. Doctors still bled patients (now even more confidently — "improving" circulation!). Real practical benefits came later with blood transfusions.
Link to other factors: Harvey built on Vesalius (observation), benefited from printing press (spread ideas), and his theory was eventually proven by technology (microscopes).
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Quiz · Question 1 of 8
In which year did William Harvey publish 'On the Motion of the Heart'?
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