Sex_cords

Sex cords

In animal embryology, the sex cords (or primitive sex cords) are structures that develop from the gonadal ridge. After sexual differentiation, in males the sex cords become the testis cords, which help develop and nourish the Sertoli cells, while in females they become the cortical cords.

External links

v • d • e Prenatal development/mammalian embryogenesis - Development of the urinary and reproductive organs

General Urinary/Reproductive system	Cloacal membrane - Cloaca - Urethral groove - Urogenital sinus - Urachus - Urogenital folds

Kidney development	Nephrogenic cord - Nephrotome - Pronephros - Mesonephros (Mesonephric tubules) Ureteric bud - Metanephric blastema

Fetal genital development - primarily internal	Gonadal ridge - Sex cord (Cortical cords, Testis cords) Pronephric duct/Wolffian duct/mesonephric duct - Müllerian duct/paramesonephric ducts (Vaginal plate)

Primarily external	Genital tubercle - Phallus - Labioscrotal folds Gubernaculum - Processus vaginalis

see also list of homologues of the human reproductive system