Development of Human External Genitalia
Androgens govern the development of human external genitalia. Exposure to androgens beginning around the eighth week of pregnancy causes undifferentiated tissue to develop in the male form. In the absence of androgens development is in the female form. This effect is independent of the genetic sex of the fetus.You can observe the effect of androgens in these animations.
Development in the absence of androgens Development in the presence of androgens
To reveal the names and information about developing structures:
Development in the absence of androgens
Development in the presence of androgens
labioscrotal fold labioscrotal fold cloacal membrane urogenital fold urogenital fold genital tubercle labioscrotal fold labioscrotal fold cloacal membrane urogenital fold urogenital fold glans labioscrotal fold labioscrotal fold urogenital fold glans urogenital membrane labioscrotal fold labioscrotal fold urogenital fold urogenital fold anus developing glans clitoris labia majora labia majora anus urethral groove labia minora labia minora developing glans penis urethral groove fused urogenital folds anus urogenital fold urogenital fold developing scrotum developing scrotum glans clitoris anus urethral orifice
anus urethral orifice scrotal raphe scrotum scrotum glans penis glans penis Last updated 09/02/07
Copyright Dr. C.A.P. Kenyon 2000-07