Sex cords

Sex cords
Details
Precursor gonadal ridge
Gives rise to testis cords, cortical cords
Identifiers
Latin chorda sexualis primordialis gonadalis
Code TE E5.7.1.1.0.0.7

Anatomical terminology

In embryogenesis, the sex cords, (primitive sex cords or gonadal cords) are structures that develop from the gonadal ridges. After sexual differentiation, at day 49, the sex cords in males become the testis cords by the action of the testis-determining factor protein, which helps to develop and nourish the Sertoli cells. The testis cords are precursors to the rete testis. They play several different roles in the development of the male genitals.[1]

In females the sex cords become the cortical cords, also called secondary cords. After further development they become the ovarian follicles.

The primitive sex cords originate from the proliferation of the epithelium of the 2 genital ridges. These epithelial cells (from the genital ridges) will penetrate / invade the underlying mesenchyme. This occurs shortly before and during the arrival of the primordial germ cells (PGC) to the paired genital ridges. [2]

See also

References

  1. ↑ Yao HH, Capel B (2002). "Disruption of testis cords by cyclopamine or forskolin reveals independent cellular pathways in testis organogenesis". Dev. Biol. 246 (2): 356–65. PMID 12051821. doi:10.1006/dbio.2002.0663.
  2. ↑ W.),, Sadler, T. W. (Thomas. Langman's medical embryology. ISBN 9781469897806. OCLC 885475111.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.