Galen, Vesalius, and Harvey: Pioneers of Circulatory System Understanding
Galen (129‑201 AD) – First to systematically study human circulation (via animal dissection); proposed tidal blood flow and continuous consumption/production. Dominated for 1,500 years.
Andreas Vesalius (1514‑1564) – Corrected Galen’s anatomy via human cadaver dissection; accurate heart, vessel, valve descriptions.
William Harvey (1578‑1657) – Discovered blood circulation as a closed circuit pumped by the heart. Published De Motu Cordis (1628), revolutionizing physiology.
Each built on predecessors; Harvey’s experimental method established modern cardiovascular science.
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