part of part of develops from develops from embryo embryonic structure genitourinary system urogenital fold gonadal ridge EMAPA:35899 BTO:0001402 UBERON:0005294 AAO:0011047 Wikipedia:Gonadal_ridge The elevation of thickened mesothelium and underlying mesenchyme found on the ventromedial border of the embryonic mesonephros in which the primordial germ cells become embedded, establishing it as the primordium of the testis or ovary. genital cord gonadal ridge indifferent gonadal ridge EFO:0001414 SCTID:308801004 genital ridge SCTID:361399001 EHDAA2:0004044 NCIT:C34321 XAO:0000018 NCIT:C34184 FMA:321917