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Fig. 264. Reconstruction of the liver and intestine of a human embryo of 17 mm


G.B., gall bladder; H. V., hepatic vein; U.V., umbilical vein; 1 -6, primary bends in the long intestinal loop; 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 20) Embryology Bailey264.jpg. Retrieved from

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current22:57, 23 January 2011Thumbnail for version as of 22:57, 23 January 2011881 × 562 (77 KB)S8600021 (talk | contribs){{Template:Bailey 1921 Figures}} Category:Human Category:Gastrointestinal Tract