Selections in pathology and surgery; or, An exposition of the nature and treatment of local disease, exhibiting new pathological views, and pointing out an important practical improvement

 
9780217047142: Selections in pathology and surgery; or, An exposition of the nature and treatment of local disease, exhibiting new pathological views, and pointing out an important practical improvement
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1839 Excerpt: ... death has actually ensued the coats expand again, by the elasticity of their structure, and present, on examination, the appearance of large empty tubes. To sum up this part of the subject, we may conclude; 1st. That the contraction of the heart depends upon a vital cause; but that its expansion is owing to the natural elasticity of its structure. 2nd. That no motion takes place in the arteries calculated to propel the blood forward. That the heart is the sole agent which moves the blood through the arteries, and that the latter are mere passive tubes as far as the circulation is concerned. 3rd. That the pulse depends solely upon the contraction of the left ventricle; that it is simultaneous in every part of the body, corresponding to the action of the heart, and that the arteries themselves possess no power of pulsating. 4th. That the only mechanical motion connected with the arteries is a gradual contraction, dependent upon their vital contractility, and a gradual dilatation, dependent upon their elasticity, so as to enable them to adapt themselves to the quantity of blood which they contain at the time. 5 th. That the diameter of all the arterial branches is smaller during life than after death: that, during the former state, their contractile property retains their calibre below their medium of elasticity, but that, when the vital principle has actually forsaken their coats, they acquire that medium, by the elastic force of their structure. On the Pathology of Inflammation. The elements of Inflammation, from Celsus down to the present time, have been considered to be pain, heat, redness, and swelling. That the disease is generally attended by these marks cannot be denied, but, according to the pathology of the present day, appearances called inflammatio...

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