Difference between revisions of "Thirst"
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==Origin== | ==Origin== | ||
| − | [ | + | [https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from [https://nordan.daynal.org/wiki/index.php?title=English#ca._600-1100.09THE_OLD_ENGLISH.2C_OR_ANGLO-SAXON_PERIOD Old English] thurst; akin to Old High German durst thirst, [[Latin]] torrēre to dry, parch, Old Irish tart dryness, thirst, [[Greek]] tersesthai to become dry |
| − | *[ | + | *[https://en.wikipedia.org/wiki/12th_century Before 12th Century] |
==Definitions== | ==Definitions== | ||
| − | *1a : a sensation of dryness in the mouth and throat associated with a [[desire]] for liquids; also : the bodily condition (as of [ | + | *1a : a sensation of dryness in the mouth and throat associated with a [[desire]] for liquids; also : the bodily condition (as of [https://en.wikipedia.org/wiki/Dehydration dehydration]) that induces this sensation |
:b : a desire or need to drink | :b : a desire or need to drink | ||
*2: an ardent [[desire]] : craving, longing <a thirst for success> | *2: an ardent [[desire]] : craving, longing <a thirst for success> | ||
==Description== | ==Description== | ||
| − | '''Thirst''' is the craving for fluids, resulting in the basic [[instinct]] of [[animals]] to drink. It is an [[essential]] [[mechanism]] involved in fluid [[balance]]. It arises from a lack of fluids and/or an increase in the [[concentration]] of certain [ | + | '''Thirst''' is the craving for fluids, resulting in the basic [[instinct]] of [[animals]] to drink. It is an [[essential]] [[mechanism]] involved in fluid [[balance]]. It arises from a lack of fluids and/or an increase in the [[concentration]] of certain [https://en.wikipedia.org/wiki/Osmolite osmolites], such as [[salt]]. If the [[water]] volume of the [[body]] falls below a certain threshold or the osmolite [[concentration]] becomes too high, the [[brain]] [[signals]] thirst. |
| − | Continuous [ | + | Continuous [https://en.wikipedia.org/wiki/Dehydration dehydration] can cause many [[problems]], but is most often [[associated]] with neurological problems such as seizures and [https://en.wikipedia.org/wiki/Kidney renal] problems. |
| − | Excessive thirst, known as [ | + | Excessive thirst, known as [https://en.wikipedia.org/wiki/Polydipsia polydipsia], along with excessive urination, known as [https://en.wikipedia.org/wiki/Polyuria polyuria], may be an indication of [https://en.wikipedia.org/wiki/Diabetes diabetes]. |
| − | There are receptors and other systems in the [[body]] that detect a decreased volume or an increased [ | + | There are receptors and other systems in the [[body]] that detect a decreased volume or an increased [https://en.wikipedia.org/wiki/Osmolite osmolite] [[concentration]]. They [[signal]] to the central [[nervous system]], where central processing succeeds. Some sources, therefore, distinguish "extracellular thirst" from "intracellular thirst", where extracellular thirst is thirst generated by decreased [[volume]] and intracellular thirst is thirst generated by increased osmolite concentration. Nevertheless, the craving itself is something generated from central processing in the [[brain]], no matter how it is detected.[https://en.wikipedia.org/wiki/Thirst] |
[[Category: Biology]] | [[Category: Biology]] | ||
Latest revision as of 02:41, 13 December 2020
Origin
Middle English, from Old English thurst; akin to Old High German durst thirst, Latin torrēre to dry, parch, Old Irish tart dryness, thirst, Greek tersesthai to become dry
Definitions
- 1a : a sensation of dryness in the mouth and throat associated with a desire for liquids; also : the bodily condition (as of dehydration) that induces this sensation
- b : a desire or need to drink
- 2: an ardent desire : craving, longing <a thirst for success>
Description
Thirst is the craving for fluids, resulting in the basic instinct of animals to drink. It is an essential mechanism involved in fluid balance. It arises from a lack of fluids and/or an increase in the concentration of certain osmolites, such as salt. If the water volume of the body falls below a certain threshold or the osmolite concentration becomes too high, the brain signals thirst.
Continuous dehydration can cause many problems, but is most often associated with neurological problems such as seizures and renal problems.
Excessive thirst, known as polydipsia, along with excessive urination, known as polyuria, may be an indication of diabetes.
There are receptors and other systems in the body that detect a decreased volume or an increased osmolite concentration. They signal to the central nervous system, where central processing succeeds. Some sources, therefore, distinguish "extracellular thirst" from "intracellular thirst", where extracellular thirst is thirst generated by decreased volume and intracellular thirst is thirst generated by increased osmolite concentration. Nevertheless, the craving itself is something generated from central processing in the brain, no matter how it is detected.[1]
