The book A Text book of Physiology was written by author Gabriel Gustav Valetin Here you can read free online of A Text book of Physiology book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Text book of Physiology a good or bad book?
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Besides this, Hering obtained pretty nearly the same result, whether the pulse was quicker or slower. This fact need not surprise us. For the experiment only furnishes us with the times in which the first portions of the ferrocyanide of potassium chance to gain the blood of the vein. And hence the greater frequency of the heart's beat may be compensated by the expulsion of a smaller amount of blood with each ventricular systole. Two circumstances may possibly have made the times found in these ...experiments too short. The solution of the salt is not propelled in a simple mechanical way, like the mass of the blood-corpuscles, but mixes with the moving liquid. Besides this, it is capable of a further diffusion in the nutritional fluid. It is possible that certain quantities of the salt are thus transferred from the right to the left ventricle, without going through the pulmonary circulation. Future experiments must decide the accuracy of these suggestions. 717. If we suppose that each of the 70 beats generally given in a minute by the adult heart, impels 4-4 ounces of blood into the systemic, and the same quantity into the pulmonic, circulation, the total quantity for that unit of time will be 308 ounces.
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