Embryologically, the gastrointestinal tract starts to develop around the third week of embryonic life and it is divided into three parts, the foregut, the midgut and the hindgut. This chapter describes the embryonic development as well he anatomy of the anal canal.

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Embryology and Anatomy of the Anal Canal

  • Ahmed H. Al-Salem

摘要

Embryologically, the gastrointestinal tract starts to develop around the third week of embryonic life and it is divided into three parts, the foregut, the midgut and the hindgut. This chapter describes the embryonic development as well he anatomy of the anal canal.