In mammals, the metanephros is the excretory organ of the fetus, which develops into the mature kidney and is formed from the rear portion of the nephrogenic cord. The metanephros is an endocrine and metabolic organ that filters the blood and excretes the end products of body metabolism in the form of urine[GO]. [ http://amigo.geneontology.org/amigo/term/GO:0001656 http://en.wikipedia.org/wiki/Metanephros#Metanephros ]

Synonyms: metanephron