An American text-book of physiology . ans of London, 1886, p. 80. * Harveys discovery of the circulation was first published in the modern sense in his workExercUalio nnatomicn de motu cordis et san(juinis in anim/tlibus, Francofurti, lfi28. This greatclassic c:in be read in English in the following : On the Motion of the Heart and Blood in William Harvey, M. D.; Williss translation, revised and edited by Alex. Bowie, 1889.,S6S CIRCULATION. 36U It must be noted here that a particle of blood which traverses a capillaryof the spleen, of the pancreas, of the stomach, or of the intestin
An American text-book of physiology . ans of London, 1886, p. 80. * Harveys discovery of the circulation was first published in the modern sense in his workExercUalio nnatomicn de motu cordis et san(juinis in anim/tlibus, Francofurti, lfi28. This greatclassic c:in be read in English in the following : On the Motion of the Heart and Blood in William Harvey, M. D.; Williss translation, revised and edited by Alex. Bowie, 1889.,S6S CIRCULATION. 36U It must be noted here that a particle of blood which traverses a capillaryof the spleen, of the pancreas, of the stomach, or of the intestines, and entersthe portal vein, must next traverse a series of venous branches of diminishingsize, and a caj)illary of the liver, before entering the succession of veins whichwill conduct the particle to the ascending vena cava (compare Figs. 93 and 94). Most of the blood, therefore, whiclileaves the liver has traversed two setsof capillaries, connected with oneanother by the portal vein, since quit-tiusr the arterial svstem. This ar-. FiG. 93.—General diagram of the circulation:the arrows indicate the course of the blood: PA,pulmonary artery : P C, pulmonary capillaries;P y, pulmonar> veins; L A, left auricle ; L V, leftventricle ; A, systemic arteries; C, systemic capil-laries ; T, systemic veins ; R A, right auricle , li V,right ventricle. Fig. 94.—Diagram of the portal system: the ar-rows indicate the course of the blood: A, arterialsystem; V, venous system : C, capillaries of thespleen, pancreas, and alimentary canal: P V, portalvein; C, capillaries of the liver; C, the rest of thesystemic capillaries. The hepatic artery is notrepresented. rangement is of extreme importance for the physiology of nutrition. Anarrangement of the same order, though less conspicuous, exists in thekidney. Causes of the Blood-flew.—The force by which the blood is driven fromthe right to the left side of the heart through the capillaries which are relatedto the respiratory surface of the
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