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.
References in periodicals archive ?
Background: Hypospadias is a congenital anomaly in which the meatus opens on the ventral surface of the penis due to the incomplete fusion of urethral folds.1 Hypospadias is the most common congenital malformation of the urethra with affects 1 in 200-300 live male births.2-3 The etiology of hypospadias is speculated to be the fetal exposure to different chemicals with anti-androgen or estrogen like activity, which may interfere with normal hormonal signaling, such as dioxins and furans, polychlorinated biphenyls, organochlorine pesticides, phthalate esters, brominated flame-retardants and some heavy metals.4 Hypospadias is categorized as glanular, subcoronal, distal penile, proximal penile and penoscrotal.
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.