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The ureteric bud, also known as the metanephrogenic diverticulum, is a protrusion from the mesonephric duct during the development of the urinary and reproductive organs. It later develops into a conduit for urine drainage from the kidneys, which, in contrast, originate from the metanephric blastema.
Beside this, what does the Mesonephros form?
Mesonephros develops by the formation of mesonephric tubules from the intermediate mesoderm, it is the principal excretory organ during early embryonic life (4—8 weeks). It gradually degenerates, although parts of its duct system become associated with the male reproductive organs.
Just so, why human kidney is Metanephric?
Metanephros are functional. At 32-36 weeks of pregnancy, the kidneys will be formed but it wont be completely matured. Maturation will take place even after birth. Kidneys are called metanephric when it is at the last stage of development.
It starts as a series of S-shaped tubules which will acquire capillaries to become a glomerulus. The tubules around the glomerulus will form a Bowmann's capsule. Together this will lead to the formation of a renal corpuscle. Laterally, the tubule enters the mesonephric collecting duct (wolffian duct).