The opisthonephros is the functional adult kidney in lampreys (cyclostomes), most fishes, and amphibians. [1] It is formed from the extended mesonephros along with tubules from the posterior nephric ridge. [2] The functional embryonic kidney in anamniotes is the pronephros. Kerr coined the term ‘opisthonephros’ in 1919. [3]

The meaning of OPISTHONEPHROS is the adult kidney of animals (as some amphibians) that are commonly considered mesonephric as adults, resembling but not identical to the embryonic mesonephros.

Oct 10, 2020 · The opisthonephros is the functional adult kidney in lampreys (cyclostomes), most fishes, and amphibians. It is formed from the extended mesonephros along with tubules from the posterior nephric ridge.

2 days ago · The opisthonephros is formed from the mesonephros along with additional tubules derived from the posterior nephric ridge. This extended structure allows for a greater capacity for filtration and reabsorption, essential for life on land. Function: More Than Just Waste Removal.

Pronephros, Mesonephros, Metanephros, Holonephros, and Opisthonephros all appear in the reptilian and amphibian renal literature. In theory, the Pronephros forms first, is more cranial

Jun 17, 2016 · While, in vertebrates, there are three distinct excretory organs formed in succession during the development of the vertebrate kidney, they are called pronephros, mesonephros and metanephros.

Opisthonephros refers to a type of excretory organ, specifically a type of kidney found in some amphibians and fishes. It represents an intermediate state of kidney development between the mesonephros and the metanephros.

We have therefore undertaken a study of the morphogenesis and pattern of growth in the definitive opisthonephros of anadromous P. marinus during metamorphosis, using light microscopy, autoradiography, and quantitative techniques.

L' opisthonéphros est le mésonéphros des Anamniotes. Il correspond à l'ensemble du mésonéphros et du métanéphros chez les Amniotes. Il est le rein (néphros) fonctionnel chez l' adulte des lamproies (cyclostomes), la plupart des poissons et des amphibiens, à l'exception des Myxines. Le rein embryonnaire chez les Anamniotes est le pronéphros.

Nov 1, 1995 · The development of opisthonephric nephrons in Rana esculenta generally follows the vertebrate scheme: mesenchymal cells from a blastemal cap that develops into an epitheloid, a comma-shaped, then...