C4: Embrology of the Female Pelvis Flashcards
Do the genital and Urinary sys develop at the same time?
Yes
Which cells do the genital and Urinary tract arise from and what form do they initially take?
The mesoderm
Wolffian body
At what time do the genital tracts differentiate into make or female?
Week 7
Where do the germ cells that sex the embryo originate and where to they migrate?
They originate in the yolk sac
They migrate to the gonadal ridge (the anteromedial side of the wolffish duct)
Which type of ducts do males have and how do they form
Wolffian ducts
Hormones cause the differentiation and growth of the W ducts and suppress the M ducts
Another word for Wolffian ducts
Mesonephrons (2nd stage kidneys)
Another name for Mullerian ducts
Paramesonephric ducts
Are the Mullerian and Wolffian ducts paired?
Yes
How do the Mullerian ducts form?
With the absence of male hormones and with stimulation of maternal hormones (estrogen)
Mullerian ducts form which structures?
Oviducts
Uterus
Proximal vagina
Where does the vagina originate from?
It has dual origin:
Müllerian ducts - form the upper vagina
urogenital sinus - forms the lower vagina
what occurs if the fusion of the dual origin of the vagina doesnt occur?
An imperforate (non-permeable) hymen will result
Which end of the mullerian duct forms the Fallopian tubes?
The cranial ends
Which end of the mullerian duct forms the uterus and the upper vagina?
The caudal end
What are the 3 types of abnormal M duct development?
Arrested development
Failure of fusion
Incomplete resorption
