19 Questions
From which mesodermal ridge does the reproductive system develop?
Intermediate mesoderm
Initially, where do the excretory ducts of the urinary and genital systems enter?
Cloaca
What is the key to sexual dimorphism in vertebrates during fertilization?
SRY gene on the Y chromosome
Which duct carries a testis-determining factor in embryo development?
Mesonephric duct
The genetic sex of an embryo is determined based on?
SRY protein presence
What part of the paramesonephric ducts fuses with its partner from the opposite side?
Caudal vertical part
Where does the ovary lie in relation to the broad ligament of the uterus?
On the posterior surface
How does the second part of paramesonephric ducts movement affect the urogenital ridges?
They come to lie in a transverse plane
What happens to mesonephric ducts in the female in the absence of testosterone?
They degenerate
What divides the pelvic cavity into the uterorectal pouch and the uterovesical pouch?
Broad ligament and uterus
Which factor influences the development of the gonad into ovary or testes?
Primordial germ cells
What happens if the primordial germ cells fail to reach the genital ridges?
The gonads fail to develop
Which cells are derived from the surface epithelium of the testis gland?
Sertoli cells
At what stage do the primordial germ cells carry an XY chromosome?
Testicular development
What do Leydig cells produce during gestation?
Testosterone
During ovarian development, what do primordial follicles consist of?
Follicular cells and oogonia
In the indifferent stage, which duct arises as a longitudinal invagination of the epithelium on the urogenital ridge?
Paramesonephric duct
What happens in the presence of estrogen and absence of Müllerian inhibiting substance for females?
(Müllerian) ducts develop into main genital ducts
What do the mesonephric ducts form in males beyond the seminal vesicle?
Ejaculatory ducts
Test your knowledge on the anatomy of female genital ducts, including the cranial, horizontal, and caudal parts of the paramesonephric ducts. Learn about the fusion of ducts in the midline and the formation of the broad ligament of the uterus.
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