part_of part of part of develops_from develops from develops from has potential to develop into has potential to develop into embryo intermediate mesoderm external genitalia urogenital fold urogenital fold FMA:321919 urethral fold EHDAA2:0004022 One of of the pair of folds derived from the cloacal folds which give rise to a portion of the external genitalia; in male embryos they close over the urethral plate and fuse to form the spongy (penile) urethra and ventral aspect of the penis, not including the glans; failure of fusion of the urethral folds leads to hypospadias; in female embryos they fuse only anterior to the anus and form the labia minora[MP]. Less commonly, urogenital fold refers to the fold in the mesonephros which is the precursor of e.g. the suspensory ligament of the ovary. This is the case in older versions of Gray's anatomy[WP] EMAPA:30888 Wikipedia:Urogenital_folds uberon UBERON:0004876 urogenital ridge developing anatomical structure presumptive structure indifferent external genitalia embryonic cloacal fold