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August Krogh
21quotes
August Krogh
Full Name and Common Aliases
August Krogh was a renowned Danish physiologist born on November 15, 1874.
Birth and Death Dates
November 15, 1874 – September 28, 1949
Nationality and Profession(s)
Krogh was a Danish citizen by birth and occupation, working primarily as a physiologist. He is widely recognized for his contributions to the field of physiology, particularly in areas related to respiration and circulation.
Early Life and Background
August Krogh was born in Frokkendrup, Denmark, into a family of modest means. His early life was shaped by his interest in science and the outdoors. As a young man, Krogh pursued studies at the University of Copenhagen, focusing on medicine and later specializing in physiology under the guidance of Christian Schaldemose.
Major Accomplishments
Krogh's research career was marked by significant contributions to our understanding of physiological processes. His work primarily focused on respiration, including the discovery of oxygen consumption in tissues and the concept of "oxygen debt." Krogh is also recognized for his work in circulation, specifically on the dynamics of blood flow.
Notable Works or Actions
Krogh's most notable contributions include:
The Krogh model, which describes the regulation of gas exchange between the lungs and the bloodstream.
The concept of "oxygen debt," where he demonstrated that tissues can consume more oxygen than is available from the blood, leading to a temporary increase in metabolic rate.
Impact and Legacy
August Krogh's work has left an indelible mark on the field of physiology. His findings have had far-reaching implications for our understanding of human respiration and circulation. Krogh's dedication to scientific inquiry and his ability to distill complex concepts into understandable terms have made him a respected figure in the scientific community.
Why They Are Widely Quoted or Remembered
August Krogh is widely quoted and remembered due to his groundbreaking research, particularly in the areas of respiration and circulation. His work has stood the test of time, influencing generations of scientists and shaping our understanding of human physiology.
Quotes by August Krogh
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The circulatory system of man and the vertebrate animals can be considered as made up of a small number of organs or subordinate systems, which are easy to recognize anatomically, and the functions of which are on the whole quite distinct.
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In the numerous observations made in my laboratory upon this object, we have only once seen a combination of vessels in which there might be a direct communication between a small artery and a vein, though the two observers could not come to a final conclusion on the point.
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In the tissues generally, and in such a cavity as the abdomen, the pressure is everywhere and practically always very nearly atmospheric, and must be so, because the integuments give way very easily to any excess of pressure, whether positive or negative.
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In the giraffe with a total height of 5 m., the heart is at a height of about 2.5 m., and it would be extremely interesting to know just how the giraffe avoids the development of filtration oedema in its long legs.
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In many cases of inflammation, the vascular changes develop slowly and long after the application of the stimulus which is responsible for the inflammatory reaction.
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In many organisms, including man, the mechanical respiration and the circulation of the blood are 'regulated' so as to correspond to the demand of the moment.
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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.
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The most direct evidence of the wonderful plasticity and elasticity of red corpuscles is obtained when they are watched in a current, where they can be caught against a projecting edge and bent by the pressure of the current flowing past them.
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The tremendous honour of the Nobel Prize is of the strongest incentive to me in my work, while the amount of the Prize will greatly simplify my task and provide me with much valuable help in my work.
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The respiratory mechanisms of birds are definitely adapted to the function of flight, as evidenced by the fact that birds which do not fly (Apteryx, Penguins) show these adaptations in a greatly reduced form.
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