obsolete_kidney true metanephros FMA:7203 SAEL:57 2.38 http://purl.obolibrary.org/obo/UBERON_0002113 Use http://purl.obolibrary.org/obo/UBERON_0002113 label: kidney EHDAA:5911 AAO:0000250 excretory canal 1: One of a pair of vertebrate organs situated in the body cavity near the spinal column that excrete waste products of metabolism, in humans are bean-shaped organs about 4 1/2 inches (11 1/2 centimeters) long lying behind the peritoneum in a mass of fatty tissue, and consist chiefly of nephrons by which urine is secreted, collected, and discharged into a main cavity whence it is conveyed by the ureter to the bladder.n2: Any of various excretory organs of invertebrate animals. MAT:0000119 James Malone MA:0000368 true BTO:0000671 EV:0100096 EMAPA:17373 WBbt:0005775