The book William Harvey And the Circulation of the Blood was written by author Huxley Thomas Henry Here you can read free online of William Harvey And the Circulation of the Blood book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is William Harvey And the Circulation of the Blood a good or bad book?
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He thought that both thecontractions and dilatations of the heart--what we call the 'systole'or contraction of the heart, and the 'diastole' or dilatation--Galenthought that these were both active movements; that the heart activelydilated, so that it had a sort of sucking power upon the fluids whichhad access to it. And again, with respect to the movements of the pulse, which anybody can feel at the wrist and elsewhere, Galen was of opinionthat the walls of the arteries partook of that which he... supposed to bethe nature of the walls of the heart, and that they had the power ofalternately actively contracting and actively dilating, so that he iscareful to say that the nature of the pulse is comparable, not to themovement of a bag, which we fill by blowing into it, and which we emptyby drawing the air out of it, but to the action of a bellows, which isactively dilated and actively compressed. Fig 3. --The course of the blood from the right to the left side of theheart (Realdus Columbus, 1559).
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