The American journal of anatomy . 40. , gall-bladder; other abbreviations, as in figure 24. The pancreatic evaginations extend farther ventrally than dothe hepatic ducts and the gall-bladder. The right and left pancreatic anlagen are separated anteriorlyby a slight ventral furrow. Caudally the two evaginations areapparently fused as the area between them is bulged evidence of a division into two evaginations is much moreclear in a view of the model of the lumina of the pancreaticanlagen (fig. 25). This is also brought out clearly by the figureof a section taken about 80/^ cau
The American journal of anatomy . 40. , gall-bladder; other abbreviations, as in figure 24. The pancreatic evaginations extend farther ventrally than dothe hepatic ducts and the gall-bladder. The right and left pancreatic anlagen are separated anteriorlyby a slight ventral furrow. Caudally the two evaginations areapparently fused as the area between them is bulged evidence of a division into two evaginations is much moreclear in a view of the model of the lumina of the pancreaticanlagen (fig. 25). This is also brought out clearly by the figureof a section taken about 80/^ caudal to the gall-bladder (fig. 26).In this figure one sees the two very definite evaginations, and 252 E. A. BAUMGARTNER that they are separated as far as the transverse width of the gutwill permit. On the lateral side there is an indefinite furrow atabout the level of the dorsal margin of the liver extending caudal-ward in the wall of the gut and yolk-mass. This marks theupper limit of the ventral pancreatic anlagen (fig. 24). In. Pig. 26 Drawing of a section through the ventral anlagen of an embryo 9mm. long. X 40. , foregut; , right and left ventral pancreases. Fig. 27 Drawing of a section through the ductus choledochus of an 11 X 40. , ductus choledochus; <S/., stomach; , ventralpancreas. Fig. 28 Drawing of a section about 80^ anterior to the preceding. X abbreviations, see figure 27. Fig. 29 Drawing of a section through the dorsal pancreas of an 11 mm. em-bryo. X 40. D., duodenum; D. pan.,dorsal pancreas; Y, yolk gut. DEVELOPMENT OF LIVER AND PANCREAS 253 figure 26 the lumina of the two veutro-lateral pancreatic diver-ticula open widely into a common lumen which connects dor-sally with the gut-cavity. Anteriorly at about the caudal endof the gall-bladder this lower common lumen is separated fromthe lumen of the intestinal anlage as shown by the model of thelumina of the ducts (fig. 25) as well as by the figure of a modelof the hep
Size: 1503px × 1662px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorwi, bookcentury1900, bookdecade1910, booksubjectanatomy
