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The embryologic gut is established by the end of the first trimester. The final location of the midgut structures is determined by a series of counterclockwise rotations performed during physiologic herniation via the umbilicus. The appendix develops from a cecal bud that travels to the right iliac fossa. Additionally, the dorsal mesenteries of the ascending colon and the descending colon recede, resulting in their retroperitoneal fixation.

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Embryology-Intestinal Rotation

  • 章节

  • 发表日期：

    2025年

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  • Ursula M. Szmulowicz,
  • Carolyn L. Power,
  • Richard L. Drake,
  • James S. Wu

摘要

The embryologic gut is established by the end of the first trimester. The final location of the midgut structures is determined by a series of counterclockwise rotations performed during physiologic herniation via the umbilicus. The appendix develops from a cecal bud that travels to the right iliac fossa. Additionally, the dorsal mesenteries of the ascending colon and the descending colon recede, resulting in their retroperitoneal fixation.