. The American journal of anatomy . •% E. C. 1611, X 18 diam. , antrum duodenale. C, corpus gastri. ,ductus choledochus. , ductus pancreatis dorsalis. F., fundus , incisura angularis. Oe., oesophagus. , pars pylorica gastri. 496 FREDERIC T. LEWIS gus enters the part toward the pylorus, The fundus is bestmarked when the pars cardiaca is in an approximately verticalposition, and this is the case in figures 6 to 9. Broman, however,has found a greater variety of positions. In an embryo of 21 figures the stomach as horizontal, so that both orifices aresuperior
. The American journal of anatomy . •% E. C. 1611, X 18 diam. , antrum duodenale. C, corpus gastri. ,ductus choledochus. , ductus pancreatis dorsalis. F., fundus , incisura angularis. Oe., oesophagus. , pars pylorica gastri. 496 FREDERIC T. LEWIS gus enters the part toward the pylorus, The fundus is bestmarked when the pars cardiaca is in an approximately verticalposition, and this is the case in figures 6 to 9. Broman, however,has found a greater variety of positions. In an embryo of 21 figures the stomach as horizontal, so that both orifices aresuperior, as described in the adult by Vesalius; but this positionmust be regarded as exceptional. The body of the stomach requires no comment other than thatits ridges appear to be rather definitely placed. The shelf-like P. hep. P. CIO O. Fig. 10 Model of the interior of the stomach, from an embryo of mm.,H. E. C. 1611, X 25 diam. Car., cardia. , canalis gastricus. , ori-ficium partis pyloricae. , plica aortica. , plica hepatica. prominence at the base of the oesophageal cone in figure 5, isevidently represented by the chief fold which extends horizon-tally across the base of the fundus, and bends down parallelwith the lesser curvature in figure 6. Such an angular fold (witha subdividing furrow) is seen in figure 9, and it is clearly shown inembryos of 10 and mm. figured by Broman. Why the ridgesare absent from other specimens, as in figures 7 and 8, and inseveral of Bromans embryos, is not apparent. THE FORM OF THE HUMAN STOMACH 497 The position of the pylorus could not be determined with cer-tainty in the 10-mm. embryo (fig. 5); and Tandler (1900) statesthat in an embryo of 11 mm. the pylorus is not marked. mm., where the stomach passes into the duodenum, there-f
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1912
