Search results
Results from the WOW.Com Content Network
Osmoregulation is the active regulation of the osmotic pressure of an organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluid balance and the concentration of electrolytes (salts in solution which in this case is represented by body fluid) to keep the body fluids from becoming too diluted or concentrated.
An osmoreceptor is a sensory receptor primarily found in the hypothalamus of most homeothermic organisms that detects changes in osmotic pressure.Osmoreceptors can be found in several structures, including two of the circumventricular organs – the vascular organ of the lamina terminalis, and the subfornical organ.
Such anticipatory reactions are open loop systems which are based, essentially, on "guess work", and are not self-correcting. [82] Anticipatory responses always require a closed loop negative feedback system to correct the 'over-shoots' and 'under-shoots' to which the anticipatory systems are prone.
EnvZ is a sensor-transmitter that spans the inner cytoplasmic membrane and has historically been divided into two domains, the sensory and the transmitter domain. [3] [4] The protein is composed of a short N-terminal tail in the periplasm, two transmembrane regions with an intervening periplasmic loop, and a cytoplasmic domain containing the autophosphorylated histidine residue, which is ...
An example that reveals the interaction of the multiple negative and positive feedback loops is the activation of cyclin-dependent protein kinases, or Cdks14. Positive feedback loops play a role by switching cells from low to high Cdk-activity. The interaction between the two types of loops is evident in mitosis.
Stylised diagram of the last part of the insect's digestive tract showing malpighian tubule (orthopteran type)The Malpighian tubule system is a type of excretory and osmoregulatory system found in some insects, myriapods, arachnids and tardigrades.
Keira Knightley, 39, stars in Netflix's new spy thriller 'Black Doves.' Here's how she trained for the series, plus all the details on her workouts and diet.
The diagram consists of a set of words and arrows. Causal loop diagrams are accompanied by a narrative which describes the causally closed situation the CLD describes. Closed loops, or causal feedback loops, in the diagram are very important features of CLDs because they may help identify non-obvious vicious circles and virtuous circles.