metanephros
an organ similar to a kidney found in adult fish and amphibians:
The study examined parasite eggs in the mesonephros of carp.
The mammalian kidney develops in three successive stages known as the pronephros, the mesonephros, and the metanephros.
The pronephros disappears very early, and the structural elements of the mesonephros mostly degenerate.
The pronephros is a temporary structure, present in catfish soon after hatching, which transforms into a mesonephros.

SMART Vocabulary: related words and phrases

Substances & structures in the body
abductor
accessorius
ACL
actin
adductor
fundus
funiculus
fusiform
glomerular
glomerulus
navicular
neuroendocrine
neurohormonal
neurohormone
nociceptive
tendinous
tendinum
tendo
tensor
Th

Related word