Kidney Embryo

Question 1

Pronephros

Answer 1

week 4

then degenerates

Question 2

Mesonephros

Answer 2

functions as interim kidney for 1st trimester

later contributes to male genital system

Question 3

Metanephros

Answer 3

permanent

first appears in *5th week of gestation

nephrogenesis continues
through 32–36 weeks of gestation.

Question 4

Ureteric bud

Answer 4

derived from caudal end
of mesonephric duct

gives rise to ureter, pelvises, calyces, *collecting ducts

fully canalized by 10th week

Question 5

Metanephric mesenchyme

Answer 5

ureteric bud interacts with this tissue

interaction induces differentiation and formation of *glomerulus through to
distal convoluted tubule (DCT)

Question 6

Ureteropelvic junction

Answer 6

last to canalize–>most common site of obstruction (hydronephrosis) in fetus.