LYCOS RETRIEVER
Liver: Intestines
built 605 days ago
Hydatic Cysts are often met with in the liver. They are due to a peculiar development of the eggs of the tape-worm of the dog, which have been received into the alimentary canal with infected water or uncooked vegetables, such as watercress. The embryo of the taenia echinococcus finds its way from the stomach or intestine into a vein passing to the liver, and, settling itself in the liver, causes so much disturbance there that a capsule of inflammatory material forms around it. Inside this wall is the special covering of the embryo which shortly becomes distended with clear hydatid fluid. The cyst should be treated like a liver-abscess, by incision through the abdominal or thoracic wall, by circumferential suturing and by exploration and drainage.
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At any one time, as much as 10 percent of all the blood in the body is present in the liver. The liver being such a vascular tissue receives 25% of its blood from the hepatic artery, which carries fresh oxygenated blood to the liver so that it can do its work of processing the substances that arrive from the intestine. The blood from the intestines represent 75% of the livers blood, which the portal vein supplies from the flesh (see diagram on p. 18).
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Venous blood from the intestine, and to a lesser extent from spleen and stomach, converges upon a short broad vessel, called the hepatic portal vein, which enters the liver through a depression in the dorsocaudal surface termed the porta hepatis. There the hepatic portal vein divides into a short right branch and a longer left branch. These vessels then ramify into the small branches which actually penetrate the functional parenchymal mass as the inner tubes of the portal canals.
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The liver ... cleans blood that has just been enriched with vitamins and minerals during digestion. After you've eaten something, the vitamins, minerals, and other nutrients from the food pass from the intestine into the blood. Before going out to the rest of the body, the nutrient-rich blood makes a stop at the liver.
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The liver is the storage depot for much of the bodys material. Blood from the digestive process of the intestines carries excess sugar. The liver cells take up this excess sugar as glucose, and converts it to glycogen for storage.
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Physically, the liver looks like a large reddish brown lump which is divided into four unequal lobes. Liver tissue is made up of hepatic cells (hepatic is an adjective denoting something concerned with the liver) which are grouped into lobules; each lobule is served by a capillary which is a minute subdivision of the two large vessels which supply the liver with blood: the hepatic artery which brings blood full of oxygen from the aorta; and the portal vein, which brings blood full of digested food from the small intestine.
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