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Thermogenesis is the process of heat production in organisms. It occurs in all warm-blooded animals, and also in a few species of thermogenic plants such as the Eastern skunk cabbage , the Voodoo lily ( Sauromatum venosum ), and the giant water lilies of the genus Victoria .
Thermogenesis (shivering) is when the body comes in contact with cold temperatures in the environment and the body feels as though it needs to raise its core body to protect itself. This is a primary trigger for the mechanism of heat production in mammalian bodies when exposed to cold.
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 ...
Examples of precocial birds include the domestic chicken, many species of ducks and geese, waders, rails, and the hoatzin. Precocial birds can provide protein-rich eggs and thus their young hatch in the fledgling stage – able to protect themselves from predators and the females have less post-natal involvement.
The asymmetrical tonic neck reflex (ATNR) is a primitive reflex found in newborn humans that normally vanishes around 6 months of age. It is also known as the bow and arrow or " fencing reflex " because of the characteristic position of the infant's arms and head, which resembles that of a fencer .
Simplified control circuit of human thermoregulation. [8]The core temperature of a human is regulated and stabilized primarily by the hypothalamus, a region of the brain linking the endocrine system to the nervous system, [9] and more specifically by the anterior hypothalamic nucleus and the adjacent preoptic area regions of the hypothalamus.
Bacteria found in the maternal gastrointestinal or gastrourinary tracts can commonly lead to neonatal infection. Bacterial infections may present as fetal distress at birth (including signs of tachycardia, temperature instability or difficulty breathing), neonatal sepsis, or neonatal meningitis.
Upon its entry to the air-breathing world, the newborn must begin to adjust to life outside the uterus. This is true for all viviparous animals; this article discusses humans as the most-researched example. [citation needed] The outside environment is a drastic change for the neonate, therefore the neonate must be assessed frequently and ...