. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. INTESTINES. 107 The Peritoneal coat is the external, being included in the lower edge of the mesentery. The Muscular coat is thin, and consists of pale fibres ; the super- ficial and longitudinal* are not Fig. and longitudinal distinct; the remainder are cir- cular^ *. The Cellular coat connects the muscular and mucous, and con- tains the vessels and nerves; when inflated with air and dried, it appears like cott
. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. INTESTINES. 107 The Peritoneal coat is the external, being included in the lower edge of the mesentery. The Muscular coat is thin, and consists of pale fibres ; the super- ficial and longitudinal* are not Fig. and longitudinal distinct; the remainder are cir- cular^ *. The Cellular coat connects the muscular and mucous, and con- tains the vessels and nerves; when inflated with air and dried, it appears like cotton, as is the case in the stomach. The Mifcous coat is longer than any other, and hence must be thrown into numerous folds, which are called valvulce conniventes; these are circular and over- lapping, and more numerous" and larger^ in the upper portion of the intestine, than in the lower. The surface of the mucous membrane is covered with a number of papillary projections called villi^ many of which are conical in shape. Each villus consists of an artery, vein, and lacteal. This lacteal does not open directly upon the surface of the mucous membrane, but the chyle is conveyed into the intestine by the intervention of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Neill, John, 1819-1880; Smith, Francis Gurney, 1818-1878. Philadelphia, Lea and Blanchard
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