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What observation made William Harvey start to think about how the hearts works?

User Lucas Rezende
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2 Answers

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Answer:He isolated parts of the heart; he ligated and divided arteries; he exerted pressure on veins on either side of the valves. His observations of dissected hearts showed that the valves in the heart allowed blood to flow in only one direction.

Step-by-step explanation:

User Montaldo
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Answer:

He isolated parts of the heart; he ligated and divided arteries; he exerted pressure on veins on either side of the valves. His observations of dissected hearts showed that the valves in the heart allowed blood to flow in only one direction.

User Bilcker
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