When does the metanephros become functional?
The metanephros begins to form at week 5 and stas to function in the fetus at about week 10-12 The pronephros is not functional in humans. The mesonephros leaves behind mesonephric duct & gets degenerated.
At week 3 of development
At week 4 of development
At week 10 -12 of development
Just before bih
Development of GU system and Neuro-vascular supply of pelvis & perineum