Human anatomy, including structure and development and practical considerations . oks into the generalperitoneal cavity and that of the left side into the lesser cavity. The relations of the remainder of the duodenum necessarily vary with the dis-tention of the intestine ; but it is correct to say that it lies behind the peritoneum,owing to the change into connective tissue subsequent to the fusion of the serousmembrane of the right side of the duodenum and that of the posterior abdominalwall. Very often when the fourth part lies in front of the aorta a fold (A peritoneumpasses some distance i
Human anatomy, including structure and development and practical considerations . oks into the generalperitoneal cavity and that of the left side into the lesser cavity. The relations of the remainder of the duodenum necessarily vary with the dis-tention of the intestine ; but it is correct to say that it lies behind the peritoneum,owing to the change into connective tissue subsequent to the fusion of the serousmembrane of the right side of the duodenum and that of the posterior abdominalwall. Very often when the fourth part lies in front of the aorta a fold (A peritoneumpasses some distance in between them from the left ; but this pocket disappears whenthe gut is distended. The pancreas, when it overlaps the second, third, or even thefourth part, more or less displaces the peritoneum. The duodenum is crossed bythe attachment of the mesentery of the jejuno-ileum and by that of the transversemesocolon. The series of changes by which this has occurred is dealt with under Fig. 1400. Transverse mesocolonJejunum Duodenum Superiorduodenal fossaBranch of left colic artery. -\—Inferior duodenal. ;?) fossa -Descending colon :.. Mesentery of small intestine Duodeno-jejunal junction, showing duodenal fossae; jejunum turned to the right. Peritoneum (page 1742), the adult condition alone being here considered. The lineof attachment of the transverse mesocolon crosses the second part of the duodenuma little below the deep flexure which on the front separates it from the first. Theposition of the line of attachment of the mesentery of the jejuno-ileum varies withthe shape and position of the duodenum. Should the latter have its third partcrossing the aorta, the attachment of the mesentery will cross the third part only,passing somewhat obliquely downward to the right. In the more usual arrangement,in which the fourth part of the duodenum either ends on the front of the aorta orcrosses it only just before its termination, the line of attachment starts on the frontof the fourth pa
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Keywords: ., bookauthormc, bookcentury1900, bookdecade1910, booksubjectanatomy
