1874-1949. Danish physiologist.
Danish physiologist, graduate in zoology 1899, Professor of Animal Physiology at the University of Copenhagen 1916-45. At an early stage, Krogh became a pupil of the respiratory physiologist Christian Bohr, who became an important influence in his subsequent research.
The special character of this research was determined by Krogh's great understanding of physics and chemistry and also by his unusual skill in constructing scientific apparatus. Krogh's metabolism apparatus, which could measure oxygen consumption, was still being used in hospitals in the 1980s to measure metabolism.
His principal contribution was in circulation physiology, as he was able to explain the control of the capillaries, which regulate the flow of blood as needed. This gave him the Nobel Prize for Physiology/Medicine in 1920.
In collaboration with H.C. Hagedorn, he introduced insulin treatment in Denmark in 1922; together, they started the production of insulin which has since given Denmark a leading position in this field.
Nils Engelbrecht, Gyldendal Leksikon