Development of the Kidney Flashcards
There are three sets of kidneys that develop through gestation. Give their names and times.
Pronephros: 3 - 4 weeks
Mesonephros: 4 weeks to 2 months
Metanephros: 5 weeks to maturity
When do the first metanephrons become functional?
2.5 months
The mesonephric duct is also called the __________.
Wolffian duct
The mesonephric duct eventually becomes the _____________.
epididymus and ductus deferens in males, nothing in females
The nephrotomes __________ and become the mesonephric duct.
vesiculate
The mesonephric duct develops caudally and joins the _____________.
cloaca
The vesicular nodules of the pronephros disappear by __________.
week 4
The Mullerian duct is also called the __________.
paramesonephric duct, because it runs just alongside the mesonephric duct
The ________ also joins the cloaca.
Mullerian duct
From what does the Mullerian duct develop?
An invagination of the coelom wall
The kidneys develop from ______________.
ureteric buds surrounded by metanephric blastemas
Where do the ureteric buds originate?
On portions of tissue on the mesonephric duct near where it attaches to the cloaca
The tissue from the __________ goes on to form the calyces and collecting ducts.
ureteric buds
The cloaca is the confluence of the _____________.
hindgut and nephric ducts
The tubular epithelium does not develop from the ___________.
ureteric bud; it develops from mesoderm near the ureteric bud called the metanephric spheroid
