. Anatomy, descriptive and applied. Anatomy. 1250 THE ORGANS OF DIGESTION the development of such organs as the liver, pancreas, and spleen. Such devel- opmental changes, with subsequent displacements, adhesions, and absorptions, serve to form all the mesenteries, omenta, and peritoneal folds of the adult, so that, while in the primitive condition the intestinal tube is suspended by a dorsal mesentery and freely movable, certain portions of it become later, by secondary adhesion, firmly connected with the parietes (retroperitoneal) or with other por- tions of the tract. Rotation of Stomach and
. Anatomy, descriptive and applied. Anatomy. 1250 THE ORGANS OF DIGESTION the development of such organs as the liver, pancreas, and spleen. Such devel- opmental changes, with subsequent displacements, adhesions, and absorptions, serve to form all the mesenteries, omenta, and peritoneal folds of the adult, so that, while in the primitive condition the intestinal tube is suspended by a dorsal mesentery and freely movable, certain portions of it become later, by secondary adhesion, firmly connected with the parietes (retroperitoneal) or with other por- tions of the tract. Rotation of Stomach and Intestine.—^The stomach rotates so that its greater (dorsal) curvature with the attached dorsal mesogastrium is carried downward and to the left, so that the right surface of the stomach is now directed backw'ard and the left surface forward (ventrad)—a change in position which explains why the left vagus nerve is found on the front of the stomach and the right vagus on the back of it. As the stomach rotates, the dorsal mesogastrium is necessarily elongated; this elongation is, however, augmented in further development, so that a large pouch, the bursa omentalis or lesser sac is formed. The entrance to this pouch constitutes the future foramen of Winsloiv. The duodenum, developed from that part of the tube which immediately succeeds the stomach, undergoes S" pt tm ti ansi 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 Gray, Henry, 1825-1861; Spitzka, Edward Anthony, 1876-1922. Philadelphia, New York, Lea & Febiger
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1913
