Identifier: anatomyphysiolo00hewe (find matches)
Title: Anatomy, physiology and hygiene for high schools
Year: 1900 (1900s)
Authors: Hewes, Henry Fox, 1867-
Subjects: Physiology Health education (Secondary) Human anatomy
Publisher: New York : American Book Company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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ole mass passes into theintestine. The intestine (Latin intns,within) is divided into thesmall intestine and the large in-testine. It consists of a tubetwenty-five feet in length, lyingmostly in coils in the abdomen,below the liver and stomach.The coils are supported by foldsof connective tissue known asthe mesentery (Greek w^fsos, mid-dle, and enteron, intestine),which carry blood vessels to theintestines. Externally both thestomach and the greater part ofthe intestine are covered with theserous co^ering of the abdominalcavity, the peritoneum (Greek peri, around, and teino,^^ I stretch ).The walls of the intestine consist of a mucous membraneand two la^^ers of muscular tissue external to this. In the small intestine the mucous membrane lies like aloose sleeve in folds or tucks called valvulce conniventes. Themembrane is filled with numerous small glands, the crypts ofLieherkiihn, which open among the cells of the lining epithe-lium. Between the glands the membrane is raised into many
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Stomach and intestine.i a, stomach ; h, cardiac orifice; c, pylonis; d, duodenum; e, large intestine ; /, small intestine. 1 This cut is diagrammatic and does not give exact positions or relations of the organsincluded. THE NUTRITION OF THE BODY 101 small processes called vilU, which give to the surface of theintestine the appearance of velvet. The villi (Latin villus, ^ a nap of cloth) are organs forthe absorption of the digested food. Each villus is a minutepillar or conical elevation made up of connective tissue linedwith the epithelial cellsof the intestinal mem-brane, and carryingblood vessels and a lym-phatic vessel known asa lacteal (Latin lac,milk). The food ispassed through the cellsof the villus wall, col-lected in the lacteal andefferent vessels, andborne away to the bloodstream. The intesti-nal wall also containscollections of glandscalled Peyers patches. Besides the secretionsfrom the crypts of Lieberkiihn and other glands which lie inthe wall, the intestine is also suppl

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