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pronephros
[ proh-nef-ros, -ruhs ]
noun
- one of the three embryonic excretory organs of vertebrates, which becomes the functional kidney of certain primitive fishes.
pronephros
/ prəʊˈnɛfrɒs /
noun
- 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
Derived Forms
- proˈnephric, adjective
Other Words From
- pro·neph·ric [proh-, nef, -rik], adjective
Word History and Origins
Origin of pronephros1
Word History and Origins
Origin of pronephros1
Example Sentences
The head and even the region of the pronephros are clearly separate from the yolk-sac; the mouth is coming to be formed.
The great distinction of the pronephros is that it, and it alone, forms the segmental duct.
It is clear from the above description that there is no trace of head-kidney or pronephros visible in the adult.
The pronephros is placed, as can be made out in later stages, on the level of the opening of the air-bladder into the throat.
It may be noted that in Lepidosteus the whole pronephros has exactly the character of a single segmental tube of the mesonephros.
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