Quain's elements of anatomy . lf. It diminishes gradually from its commencement at the cfecum toits termination at the anus ; excepting that there is a well-marked dila-tation of the rectum just above its lower end. In outward form, the greater part of the large intestine differs Fig. 534.—OtJTLINE SKETCH OF A SEC-TION OF THE ASCENDISG COLON (Alien Thomson). | s, serous covering ; s, s, reflection ofthis at the attached border forming ashort wide mesentery, between the foldsof which the blood-vessels are seen pass-ing to the colon ; a, one of the appen-dices epiploic^ hanging from the innerbor
Quain's elements of anatomy . lf. It diminishes gradually from its commencement at the cfecum toits termination at the anus ; excepting that there is a well-marked dila-tation of the rectum just above its lower end. In outward form, the greater part of the large intestine differs Fig. 534.—OtJTLINE SKETCH OF A SEC-TION OF THE ASCENDISG COLON (Alien Thomson). | s, serous covering ; s, s, reflection ofthis at the attached border forming ashort wide mesentery, between the foldsof which the blood-vessels are seen pass-ing to the colon ; a, one of the appen-dices epiploic^ hanging from the innerborder ; I m, indicates at the free borderone of the three bands formed by thethickening of the longitudinal muscularcoat; the dotted line continued from themargins of these bands represents theremainder of the longitudinal muscularcoat, and the thick line within itmarked c in, represents the circular mus-cular layer j m, the mucous membraneat the flattened part ; r, the crescenticbands or indentations which divide ?remarkably from the small intestine ; for, instead of constituting aneven cylindrical tube, its surface is thrown into numerous sacculi,marked off from each other hj intervening constrictions, and arrangedin three longitudinal rows, separated by three strong flat bands of longi-tudinal muscular fibres. This sacculated structure is not found in therectum. ^12 THE LAEGE INTESTINE. STRTTCTtTRE OF THE LARGE INTESTINE. The large intestine has four coats, like those of the stomach andsmall intestine, namely, the serous, muscular, submucous, and mucous. The serous coat is for the most part similar to that of the small in-testine, except that, along the colon and upper part of the rectum, it isprolonged into numerous httle projections, which enclose a certainamount of fat, and are termed appetidices epiploicce.
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
