enow.com Web Search

Search results

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

    en.wikipedia.org/wiki/Thermogenesis

    The low demands of thermogenesis mean that free fatty acids draw, for the most part, on lipolysis as the method of energy production. A comprehensive list of human and mouse genes regulating cold-induced thermogenesis (CIT) in living animals or tissue samples has been assembled [15] and is available in CITGeneDB. [16]

  3. Thermogenin - Wikipedia

    en.wikipedia.org/wiki/Thermogenin

    The UCP1, or thermogenin, gene likely arose in an ancestor of modern vertebrates, but did not initially allow for our vertebrate ancestor to use non-shivering thermogenesis for warmth. It wasn't until heat generation was adaptively selected for in placental mammal descendants of this common ancestor that UCP1 evolved its current function in ...

  4. Warm-blooded - Wikipedia

    en.wikipedia.org/wiki/Warm-blooded

    Additionally, almost all eutherian mammals (with the only known exception being swine) have brown adipose tissue whose mitochondria are capable of non-shivering thermogenesis. [8] This process involves the direct dissipation of the mitochondrial gradient as heat via an uncoupling protein , thereby "uncoupling" the gradient from its usual ...

  5. Cold and heat adaptations in humans - Wikipedia

    en.wikipedia.org/wiki/Cold_and_heat_adaptations...

    The second is non-shivering, which occurs in brown adipose tissue. [19] Population studies have shown that the San tribe of Southern Africa and the Sandawe of Eastern Africa have reduced shivering thermogenesis in the cold, and poor cold-induced vasodilation in fingers and toes compared to that of Caucasians. [5]

  6. Brown adipose tissue - Wikipedia

    en.wikipedia.org/wiki/Brown_adipose_tissue

    However, brown adipose tissue is highly specialized for this non-shivering thermogenesis. First, each cell has a higher number of mitochondria compared to more typical cells. Second, these mitochondria have a higher-than-normal concentration of thermogenin in the inner membrane.

  7. Doctors Explain What It Means When You Have Chills But No Fever

    www.aol.com/9-reasons-might-chills-no-210200160.html

    Chills and shivering can be a first sign of hypothermia, Dr. Biernbaum says. You also might feel confused, drowsy, exhausted, or have slurred speech. You also don’t need to be in extremely cold ...

  8. Dormancy - Wikipedia

    en.wikipedia.org/wiki/Dormancy

    Non-shivering thermogenesis is a regulated process in which the proton gradient generated by electron transport in mitochondria is used to produce heat instead of ATP in brown adipose tissue. [3] Animals that hibernate include bats , ground squirrels and other rodents, mouse lemurs, the European hedgehog and other insectivores, monotremes and ...

  9. Homeostasis - Wikipedia

    en.wikipedia.org/wiki/Homeostasis

    The metabolic rate is increased, initially by non-shivering thermogenesis, [37] followed by shivering thermogenesis if the earlier reactions are insufficient to correct the hypothermia.