DEVELOPMENT OF FEMALE EXTERNAL
GENITALIA
different stage: BEGINS AT 9TH WK
Female External Genitalia
• Differentiation of female external genitalia is induced by estrogens.
---genital tubercle forms phallus which becomes clitoris.
---genital folds form labia rainora. They fuse posteriorly, to form frenulum of labia
minora.
---genital (labioscrotal) swellings form labia majora.
They fuse
*** posteriorly to form posterior labial commissure &
*** anteriorly to form anterior labial commissure & mons pubis.
• Vestibule of vagina develops from urogenital sinus.
GENITALIA
different stage: BEGINS AT 9TH WK
Female External Genitalia
• Differentiation of female external genitalia is induced by estrogens.
---genital tubercle forms phallus which becomes clitoris.
---genital folds form labia rainora. They fuse posteriorly, to form frenulum of labia
minora.
---genital (labioscrotal) swellings form labia majora.
They fuse
*** posteriorly to form posterior labial commissure &
*** anteriorly to form anterior labial commissure & mons pubis.
• Vestibule of vagina develops from urogenital sinus.