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August Krogh
said
For a large number of problems there will be some animal of choice or a few such animals on which it can be most conveniently studied.
— A. Krogh (1929). The progress of physiology, American Journal of Physiology 90:243–251.
August Krogh
Danish physiologist (1874–1949)
- Fame56.7
- Momentum3.6
- Doctors rank#102
Source-basedRising
- Fame56.7
- Momentum3.6
- Doctors rank#102
- Wikipedia1.7K
Lived 1874–1949, aged 75
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Summary
Updated 2026-06-09
A Danish zoophysiologist who mapped how the body's tiniest blood vessels open and close on demand — capillaries adjusting flow where muscle needs it, arterioles gating supply — work precise enough to win the 1920 Nobel Prize in Medicine.
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Schack August Steenberg Krogh was born on 15 November 1874 and spent three decades at the University of Copenhagen's zoophysiology department, holding a professorship from 1916 to 1945. His research cut across multiple fields, but the breakthrough came when he described how capillaries in skeletal muscle regulate themselves: opening when tissue demands oxygen, closing when it doesn't, with arterioles controlling the gates. The Nobel committee recognized the discovery in 1920. He also articulated what became known as Krogh's principle, a guide for choosing the right animal model to study a phys…
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