APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The metanephros remains as the permanent adult kidney. It develops from the uteric bud, an outgrowth of the mesonephric duct, and the metanephric mesoderm, derived from the caudal part of the nephrogenic ridge.

Detailed explanation-2: -The vertebrate kidney is derived from the intermediate mesoderm (IM) located lateral to the somites. The metanephros is the final of three embryonic excretory organs that develop in a temporally and spatially distinct order, these being the pronephros, mesonephros and metanephros.

Detailed explanation-3: -The metanephros develops from the ureteric bud and the metanephrogenic blastema. The ureteric bud forms the primitive ureter of the metanephric kidney and dilates at its upper end to become the renal pelvis, enveloped by the metanephrogenic cap.

Detailed explanation-4: -The ureteric bud, also known as the metanephric 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.