urethral folds

urogenital folds

derived from the cloacal folds; in male embryos, they close over the urethral plate and fuse to form the spongy urethra and ventral aspect of the penis; in female embryos, the unfused urogenital folds develop into the labia minora.

urethral folds

a pair of folds derived from the cloacal folds. In male embryos they close over the urethral plate and fuse to form the spongy urethra and ventral aspect of the penis, and in female embryos they fuse only anterior to the anus and form the labia minora.
References in periodicals archive ?
Hypospadia results from an incomplete fusion of the urethral folds that occurs between the seventh and fourteenth week of gestation.
Hypospadias is a common congenital anomaly, characterized by incomplete fusion of the urethral folds during fetal development, which results in the urethra opening on the ventral surface of the penis or on the scrotum.