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-as of [25 JULY 2024]–
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*’thirst’ is the ‘craving’ for ‘fluids’*
(…resulting in the basic instinct of animals to ‘drink’)
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(it is an essential mechanism involved in ‘fluid balance’)
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(it arises from a lack of fluids or + 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’)
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(‘continuous dehydration’ can cause many problems, but is most often associated with…)
‘renal problems’
‘neurological problems’
((such as ‘seizures’)
‘excessive thirst’
(aka ‘polydipsia’)
‘excessive urination’
(aka ‘polyuria’)
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(both of these conditions may be an indication of ‘diabetes mellitus’ or ‘diabetes insipidus’)
(there are ‘receptors’ and other ‘systems’ in the ‘body’ that detect a decreased volume or an increased osmolite concentration)
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(some sources, therefore, distinguish ‘extra-cellular thirst’ from ‘intra-cellular thirst’…)
‘extra-cellular thirst’
(‘thirst’ generated by decreased volume)
intra-cellular thirst
(‘thirst’ generated by ‘increased osmolite concentration’)
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(nevertheless, the ‘craving’ itself is something generated from ‘central processing’ in the ‘brain’)
(no matter how it is ‘detected’)
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*SKETCHES*
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