enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Kidney development - Wikipedia

    en.wikipedia.org/wiki/Kidney_development

    The development of the kidney proceeds through a series of successive phases, each marked by the development of a more advanced kidney: the archinephros, pronephros, mesonephros, and metanephros. [1] The pronephros is the most immature form of kidney, while the metanephros is most developed. The metanephros persists as the definitive adult kidney.

  3. Development of the urinary system - Wikipedia

    en.wikipedia.org/wiki/Development_of_the_urinary...

    The mesonephros persists and form the permanent kidneys in fish and amphibians, but in reptiles, birds, and mammals, it atrophies and for the most part disappears rapidly as the permanent kidney (metanephros) develops beginning during the sixth or seventh week, so that by the beginning of the fifth month only the ducts and a few of the tubules ...

  4. Poikilotherm - Wikipedia

    en.wikipedia.org/wiki/Poikilotherm

    The common frog is a poikilotherm and is able to function over a wide range of body core temperatures. A poikilotherm (/ ˈ p ɔɪ k ə l ə ˌ θ ɜːr m, p ɔɪ ˈ k ɪ l ə ˌ θ ɜːr m /) is an animal (Greek poikilos – 'various', 'spotted', and therme – 'heat') whose internal temperature varies considerably.

  5. Scientists take ‘pioneering steps’ toward growing human ...

    www.aol.com/scientists-pioneering-steps-toward...

    Scientists have grown kidneys containing mostly human cells inside pig embryos, an important step toward growing kidneys and potentially other human organs.

  6. Pronephros - Wikipedia

    en.wikipedia.org/wiki/Pronephros

    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 complex metanephros acts as the adult kidney ...

  7. Mammalian kidney - Wikipedia

    en.wikipedia.org/wiki/Mammalian_kidney

    The unipapillary kidney with a single renal pyramid is the simplest type of kidney in mammals, from which the more structurally complex kidneys are believed to have evolved. [ 17 ] [ 6 ] [ 18 ] Differences in kidney structure are the result of adaptations during evolution to variations in body mass and habitats (in particular, aridity ) between ...

  8. Kidney (vertebrates) - Wikipedia

    en.wikipedia.org/wiki/Kidney_(vertebrates)

    Unlike mammals, the kidneys of reptiles do not have a clear distinction between cortex and medulla. [43] The kidneys lack the loop of Henle, have fewer nephrons (from about 3,000 to 30,000), and cannot produce hypertonic urine. [3] [21] Nitrogenous waste products excreted by the kidneys may include uric acid, urea and ammonia. [55]

  9. Meet some of the world's cleanest pigs, raised to grow ...

    lite.aol.com/pf/story/0001/20240721/ad400e7f1d30...

    The biosecurity gets even tighter just a few miles away in Christiansburg, Virginia, where a new herd is being raised – pigs expected to supply organs for formal studies of animal-to-human transplantation as soon as next year. This massive first-of-its-kind building bears no resemblance to a farm. It’s more like a pharmaceutical plant.