3. Physiology
        3.11. Neurophysiology
3.11.3. Thirst

Thirst

[Ref:WG22:p240-242; KB2:p3-4]

Stimulus for water intake

 

 

Osmolality

Increased osmotic pressure

--> Acts on osmoreceptors
* Located in anterior hypothalamus

ECF volume

Decreased ECF volume

--> Increase renin secretion

--> Increase angiotensin II production

Angiotensin acts on subfornical organ (SFO)
--> Increase thirst

Some evidence that angiotensin might also act on organum vasculosum of the lamina terminalis (OVLT)

Others

Keywords:  Thirst


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