The Anatomists' Library by Salter Colin;
Author:Salter, Colin;
Language: eng
Format: epub
Publisher: Ivy Press, The
Published: 2023-06-15T00:00:00+00:00
An Anatomical Account of the Motion of the Heart and Blood (1628)
An illustration of William Harveyâs experimental proof, using ligatures, of the difference between veins and arteries.
Instead of tackling the question of whether or not the heart was the seat of the soul, Harvey considered the body from a purely mechanical perspective. The heart was a pump, not a temple; the blood vessels carried blood, not pneuma, to and from the heart; and the pulses in them were caused by the contractions of the heart, not by themselves. His approach was scientific, empirical and analytical. He dissected animals of all kinds and used what he found there to form and test theories about human circulation.
He found that the left and right ventricles worked together, not independently as previously thought. As the possibility of circular flow began to present itself, he did further experiments, first on animals and then on humans. If he tied off the veins, the heart became empty; if he tied off the arteries, the heart swelled up. By tying a ligature to a human arm, he observed that the lower arm became pale and cold; by loosening it a little the arm reddened and heated up, because pressure on the arteries, which lie deeper in the arm, had been relieved. In causing the veins to bulge, Harvey was able to see little bulges within them, which were the valves discovered by his mentor Fabrici; valves were evidence of a one-way system, which he confirmed by trying to force blood backwards through the veins. Harveyâs book is admired as much for his process as for his discovery.
Download
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.
Spell It Out by David Crystal(35348)
Underground: A Human History of the Worlds Beneath Our Feet by Will Hunt(11261)
A Year in the Merde by Stephen Clarke(4657)
Venice by Jan Morris(2051)
Claridge's: The Cookbook by Nail Martyn & Erickson Meredith(1963)
My Paris Kitchen: Recipes and Stories by Lebovitz David(1893)
A TIME OF GIFTS by Patrick Leigh Fermor(1849)
The Plantagenets by Dan Jones(1617)
Welcome to the Goddamn Ice Cube by Blair Braverman(1601)
Bang Poland: How To Make Love With Polish Girls In Poland by Roosh V(1588)
Top 10 Prague (EYEWITNESS TOP 10 TRAVEL GUIDES) by DK(1569)
From Russia with Lunch by David Smiedt(1551)
The Finnish Way by Katja Pantzar(1537)
The Isle of Mull by Terry Marsh(1520)
A TIME TO KEEP SILENCE by Patrick Leigh Fermor(1499)
Rick Steves London 2018 by Rick Steves & Gene Openshaw(1494)
A Taste of Paris by David Downie(1491)
Merde in Europe by Stephen Clarke(1436)
Insight Guides Experience Tokyo by Insight Guides(1419)