Labioscrotal swelling

Embryonic structure of the reproductive system

Labioscrotal swelling
Stages in the development of the external sexual organs in the male and female.
Details
Precursor	Genital tubercle
Gives rise to	Labia majora, scrotum
System	Reproductive system
Identifiers
Latin	tuberculum labioscrotale
TE	swelling_by_E5.7.4.0.1.0.4 E5.7.4.0.1.0.4
Anatomical terminology [edit on Wikidata]

The labioscrotal swellings (genital swellings or labioscrotal folds) are paired structures in the mammalian embryo that represent the final stage of development of the caudal end of the external genitals before sexual differentiation. In humans, the two swellings merge:

In the female, they become the posterior labial commissure. The sides of the genital tubercle grow backward as the genital swellings, which ultimately form the labia majora; the tubercle itself becomes the mons pubis.
In the male, they become the scrotum.