Which of the following structures contribute to development of Kidney?

Kidney has two pas: The excretory system (true kidney) develops from the metanephric blastema. The collecting system develops from Mesonephric duct (ureteric bud). Ureteric bud penetrates metanephros to conve it into metanephric blastema, which later develops into true kidney. Sources for kidney development Source System Structure derived : Metanephric blastema Excretory system PCT, DCT, Bowman's capsule, Henle's loop Ureteric bud Collecting system Collecting ducts,major and minor calyces, renal pelvis.