From Embryology

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Fig. 265. Reconstruction of the stomach and intestine of a human embryo of 28 mm


The numbers are placed on the coils derived from the primary bends as shown in Fig. 302; 1 represents the duodenum.

Very shortly after the formation of the long loop in the intestine, six bends become recognizable in the portion between the stomach and the apex of the loop (Fig. 264). These bends later form distinct loops which are destined to become definite parts of the small intestine. The first loop is the duodenum, the development of which has already been considered, and which maintains practically its original position. The other five loops continue to elongate and form secondary loops, all of which push their way into the umbilical coelom where they remain until the embryo reaches a length of 40 mm. (compare Figs. 265 and 266). Then they return very quickly to the abdominal cavity proper.

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Bailey FR. and Miller AM. Text-Book of Embryology (1921) New York: William Wood and Co.

Cite this page: Hill, M.A. (2024, February 26) Embryology Bailey265.jpg. Retrieved from

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current22:58, 23 January 2011Thumbnail for version as of 22:58, 23 January 2011906 × 644 (80 KB)S8600021 (talk | contribs){{Template:Bailey 1921 Figures}} Category:Human Category:Gastrointestinal Tract Category:Liver