MeSH definition : One of a pair of excretory organs (mesonephroi) which grows caudally to the first
pair (PRONEPHROI) during development. Mesonephroi are the permanent kidneys in adult
amphibians and fish. In higher vertebrates, proneprhoi and most of mesonephroi degenerate
with the appearance of metanephroi. The remaining ducts become WOLFFIAN DUCTS.;
One of a pair of excretory organs (mesonephroi) which grows caudally to the first
pair (PRONEPHROI) during development. Mesonephroi are the permanent kidneys in adult
amphibians and fish. In higher vertebrates, proneprhoi and most of mesonephroi degenerate
with the appearance of metanephroi. The remaining ducts become WOLFFIAN DUCTS.