View source for Labioscrotal swelling

{{Short description|Embryonic structure of the reproductive system}}
{{redirect|Genital swelling|genital swelling in primates|Sexual swelling}}
{{Infobox embryology
| Name          = Labioscrotal swelling
| Latin         = tuberculum labioscrotale
| Image         = Human genitalia - development 1.png
| Caption       = Stages in the development of the external sexual organs in the male and female.
| Image2        =
| Caption2      =
| System        = [[Reproductive system]]
| CarnegieStage =
| Precursor     = [[Genital tubercle]]
| GivesRiseTo   = [[Labia majora]], [[scrotum]]
}}
The '''labioscrotal swellings''' ('''genital swellings''' or '''labioscrotal folds''') are paired structures in the [[mammal]]ian [[embryo]] that represent the final stage of development of the [[Caudal (anatomical term)|caudal]] end of the external [[genitals]] before [[sexual differentiation]]. In humans, the two swellings merge:
* In the ''female'', they become the [[Labia majora#Function and structure|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]].

==References==
{{Gray's}}
{{Reflist}}

==External links==
* [https://web.archive.org/web/20060429053315/http://sprojects.mmi.mcgill.ca/embryology/ug/Reproductives/Normal/Male_external.html "Development of Male External Genitalia", at mcgill.ca]
* [https://web.archive.org/web/20060430024701/http://sprojects.mmi.mcgill.ca/embryology/ug/Reproductives/Normal/Female_external.html "Development of Female External Genitalia", at mcgill.ca]
* [http://www.mhhe.com/socscience/sex/common/ibank/ibank/0058b.jpg Diagram at mhhe.com]
* {{EmbryologySwiss|ugenital/genitexterne01}}
* {{LoyolaMedEd|urology/nlpendv.htm}}

{{Development of urinary and reproductive systems}}
{{Portal bar|Anatomy}}
{{Authority control}}

[[Category:Embryology of urogenital system]]