science & techNLM Circulating Now1543 · Padua, Italy

Andreas Vesalius and De Fabrica

the gist

Andreas Vesalius, born in Brussels in 1514, published De humani corporis fabrica in 1543, a book that set anatomy on a new footing. For centuries medical teaching had relied on the ancient physician Galen, whose anatomy had largely been based on animal dissections, mostly of apes, dogs and sheep. Vesalius dissected human bodies himself and found errors, including that the human liver has two lobes rather than five and that the human brain base lacks the rete mirabilis Galen had described. He backed every description with what he saw, and he used detailed illustrations as teaching tools.

so what

Vesalius made direct observation the basis of medical knowledge, a shift that underpins modern medical research. His work also made illustration a central part of anatomy teaching.

U.S. National Library of Medicine

Illustrative photo · Jan van Calcar, Public domain, via Wikimedia Commons