part of part of 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]. EMAPA:30888 Wikipedia:Urogenital_folds UBERON:0004876 presumptive structure indifferent external genitalia embryonic cloacal fold