August Krogh Quotes

20 quotes in 412 categories

• The theory of the lung as a gland has justified its existence and done excellent service in bringing forward facts, which shall survive any theoretical…
• We may fondly imagine that we are impartial seekers after truth, but with a few exceptions, to which I know that I do not belong,…
• The absorption of oxygen and the elimination of carbon dioxide in the lungs take place by diffusion alone. There is no trustworthy evidence of any…
• 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…
• 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…
• 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…
• Muscles do not use oxygen at a constant rate.
• Since muscular contractions are usually more or less regularly alternated with relaxations, the system of valves makes of the veins of every muscle a very…
• I found it possible to observe at least the superficial capillaries of muscles both in the frog and in mammals through a binocular microscope, using…
• When a suitable quantity of India ink is introduced into the circulation of a living anaesthetized animal, it is evenly mixed with the blood, and…
• 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…
• 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…
• 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…
• 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…
• 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.
• In man, the mechanical breathing is essential to life, and it is one of the old tests for death to see whether these movements have…
• There can be little doubt that fishes swimming rapidly do not make respiratory movements at all, but obtain the necessary ventilation of the gills simply…
• 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,…
• The affinity of blood or pure haemoglobins for oxygen is a complex phenomenon, depending upon a number of conditions, the most important of which are…
• It is no doubt technically possible to study metabolism and respiration of fishes during swimming at a constant rate, and of certain insects and birds…

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