Class-book of physiology - for the use of schools and families - comprising the structure and functions of the organs of man, illustrated by comparative reference to those of inferior animals (1860) (14779935722)

Identifier: 61250860R.nlm.nih.gov

Title: Class-book of physiology : for the use of schools and families : comprising the structure and functions of the organs of man, illustrated by comparative reference to those of inferior animals

Year: 1860 (1860s)

Authors: Comings, B. N. (Benjamin N.)

Subjects: Physiological Processes Physiology, Comparative

Publisher: Memphis, Tenn. : Cleaves & Vaden

Contributing Library: U.S. National Library of Medicine

Digitizing Sponsor: Open Knowledge Commons, U.S. National Library of Medicine

Text Appearing Before Image:

na porta; is a division of the abdominal vena portae, into which empty allthe veins of the digestive organs. It sends branches into all parts of the liver. Afterthese branches have reached the capillary state, they are succeeded by the roots of thehepatic veins, which unite into three large veins which empty into the inferior vena cava.a, The right or greater lobe, ft, The left or smaller lobe, c, Groove which lodges theumbilical vein, d, Hepatic vena ports, e, Hepatic artery. /, Inferior vena cava. Figures 6 and 7. Diver.—Figure 6 represents a horizontal section of two superficial lobules of the liver, showing the probable arrangement of the biliary ducts, a, a, Interlobular branches of the hepatic veins, ft, b, Trunk of biliary ducts. Figure 7 represents a horizontal section of three superficial lobules, showing the twoprincipal systems of blood-vessels, a, a, Inter-lobular veins proceeding from he hereticveins, ft, b, Inter-lobular plexuses formed by branches of the portal veins.

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I DIGESTION. 89 179. A quiet and tranquil state of mind is also essentialto good digestion. 180. Drinks taken in large quantities materially inter-fere with, the process of digestion. The juices secreted bythe stomach itself are sufficient for the solution of mostarticles of diet; and whenever a superabundance of liquidis swallowed, the first effort of the stomach is to get ridof it. This it does by absorbing the liquid at once andwithout change through the blood-vessels of the mucouscoat. The digestion of the more solid materials is notcommenced until the liquid is disposed of. 181. As soon as any portions of the food become suffi-ciently digested to mix with the gastric fluid, and formchyme, they are sent through the pyloric orifice of thestomach into the duodenum, or first portion of the aliment-ary canal. (Fig. 33.) Around the pyloric orifice (d), atthe inside, is a thick band or valve, called sphincter.When digestion is not going on, this sphincter, as well asa similar one at the

Klassenbuch der Physiologie für den Gebrauch in Schulen und Familien 1860 Buchillustrationen Medizin medizinische Illustrationen Medizin Physiologie Ausbildung Schulen Bilder aus dem Internetarchiv memphis Tennessee

1860

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