. Journal of anatomy. rimitive distal or left colon, there being no development onthe common mesentery of the right, proximal, or mesenteric colon. Atthe counnencement of the colon a curved caecum was noted (5 cm.)connected to the termination of the small intestine. The distance between The Peritoneum and Intestinal Tract in Monotremes and Marsupials 291 the pylorus and the ileo-colic junction, which were practically in the samemesial plane, was about 5 cm. At the latter a mesial band was seen,traceable only as far as the root of the mesentery and not to the pyloricregion. The body (8 cm.) and
. Journal of anatomy. rimitive distal or left colon, there being no development onthe common mesentery of the right, proximal, or mesenteric colon. Atthe counnencement of the colon a curved caecum was noted (5 cm.)connected to the termination of the small intestine. The distance between The Peritoneum and Intestinal Tract in Monotremes and Marsupials 291 the pylorus and the ileo-colic junction, which were practically in the samemesial plane, was about 5 cm. At the latter a mesial band was seen,traceable only as far as the root of the mesentery and not to the pyloricregion. The body (8 cm.) and large right process (5 cm.) of spleen aresuspended on the great omentum, while connected to the small left process(125 cm.) and great omentum is the left lateral fold (lieno-mesocolic).Below, this is related at first to the left aspect of mesocolon, but morecaudally to the dorsal wall between the dorsal attachment of the meso- PYLORIC SPHIUCTER TERMINATION OfDUODENUM POSITION orOUOOENAi. FOLD Small Guton m£s£nt£ry. GTomentum SPLEEN , REMAINS Of I MESIAL FOLO LEFT MESOCOLON COLON Fig. 7.—Gastro-intestine of Bandicoot (Peramelida;). colon and the left kidney. Its left margin is free, and measures 4 fold, with the pancreas it supports, is free from the dorsal wall andleft kidney. Just above the level of the fundus of the bladder it iscontinuous, as stated, with the duodenal fold ventral to the colon. Generalisations. Owing to the diversity of intestinal t3pes met with in the two ordersMonotremata and Marsupialia, light is thrown on the method of fixationof the mammalian gut and the significance of bands in connection withthe human intestine. 1. Duodenal {Right Lateral) Fold.—The definition of the mesoduodenumis a result of inequality of growth between it and the common mesentery, 292 The Peritoneum and Intestinal Tract in Monotremes and Marsupials dependent primarily, however, on the functional activity of the duodeno-intestinal junction corres
Size: 1517px × 1647px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectanatomy, bookyear1867
