A metanephric nephron is the functional unit of the metanephros[GO].
Comment:
[homology-note] "The primitive form of the vertebrate nephron consists of a vascular filtration surface overlain with podocytes, a specialized coelomic cavity to receive the ultrafiltrate, and a tubule for modification to final urine. Although previously thought to be unique to the vertebrates, this design is now known to be widespread among invertebrates, including most of the protochordates, and especially their larvae.[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0000719", ontology="VHOG", source="DOI:10.1093/icb/34.4.542 Ruppert EE, Evolutionary Origin of the Vertebrate Nephron. Integrative and Comparative Biology (1994)", source="http://bgee.unil.ch/"}