Webpronephros ( prəʊˈnɛfrɒs) n, pl -roi ( -rɔɪ) or -ra ( -rə) (Zoology) the first-formed anterior part of the embryonic kidney in vertebrates, which remains functional in the larvae of the lower vertebrates. See also mesonephros, metanephros [C19: New Latin, from pro-2 + Greek nephros kidney] proˈnephric adj Pronephros is the most basic of the three excretory organs that develop in vertebrates, corresponding to the first stage of kidney development. It is succeeded by the mesonephros, which in fish and amphibians remains as the adult kidney. In amniotes, the mesonephros is the embryonic kidney and a more … See more The pronephros is the first in a sequence of kidneys that form in vertebrate embryos. The pronephric primordium develops from the intermediate mesoderm, lying between the paraxial (somitic) mesoderm and … See more Older anatomical texts describe the pronephros as condensing from nephrotomes, but modern visualization techniques have … See more • Mesonephros • Metanephros See more • Development of the pronephros in zebrafish See more In both amphibians and zebrafish the pronephros has a single nephron attached to a nephric duct, which in turn is linked to the cloaca. Although these kidneys have a simple anatomical … See more One unique feature of pronephroi is the arrangement by which the glomerular filtrate is generated and collected by the nephron. In pronephroi the glomerulus (or glomus if it extends … See more Once the more complex mesonephros forms the pronephros undergoes apoptosis in amphibians. In fishes the nephron … See more

Pronephros definition and meaning Collins English …

WebPronephros the most basic of the three excretory organs that develop in vertebrates, corresponding to the first stage of kidney development. It is succeeded by the … WebThe pronephros is the most immature form of kidney, while the metanephros is most developed. The metanephros persists as the definitive adult kidney. [citation needed] Archinephros [ edit] The archinephros is considered as hypothetical or primitive kidney. Pronephros [ edit] The pronephros develops in the cervical region of the embryo. st. mary\u0027s minoa ny

Pronephros - Definition, Nephrons, Stages, Function and …

Webpronephros, pronephroi Meanings Definition Source Word Forms Origin Filter noun A primitive kidney, the most anterior of three pairs of renal organs, functional only during embryonic development in most lower vertebrates, and appearing only transiently in the human embryo. Webster's New World Similar definitions Advertisement Webpro·neph·ros. , pl. pronephroi ( prō-nef'rŏs, -roy) 1. The definitive excretory organ of primitive fishes. 2. In the embryos of higher vertebrates, a vestigial structure consisting of a series of tortuous tubules emptying into the cloaca by way of the primordial nephric duct; in the human embryo, the pronephros is a very rudimentary ... WebDefinition: (n.) Alt. of Pronephron; Example Sentences: (1) In both species the primary haemopoietic organs are the pronephros, the mesonephros and the spleen. (2) These six metameres also are responsible for the existence of the pronephros. (3) This strain could, however, be frequently reisolated from the pronephros of fish in the test group ... st. mary\u0027s menston catholic