Urorectal septum

Urorectal septum

Cloaca of human embryo from twenty-five to twenty-seven days old.
Details
Days 32
Identifiers
Latin septum urorectale
Code TE E5.4.9.0.2.0.14

Anatomical terminology

The endodermal cloaca is divided into a dorsal and a ventral part by means of a partition, the urorectal septum, which grows downward from the ridge separating the allantois from the cloacal opening of the intestine and ultimately fuses with the cloacal membrane and divides it into an anal and a urogenital part. The dorsal part of the cloaca forms the rectum, and the anterior part of the urogenital sinus and bladder.

Clinical significance

Malformation of the urorectal septum can lead to several different types of fistulas.[1]

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

  1. ↑ Escobar LF, Heiman M, Zimmer D, Careskey H (2007). "Urorectal septum malformation sequence: Prenatal progression, clinical report, and embryology review". Am. J. Med. Genet. A. 143 (22): 2722–6. doi:10.1002/ajmg.a.31925. PMID 17937427.

External links


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