Hypovolemic vs. Osmotic Thirst
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What is the stimulus for osmotic thirst?
High solute concentration outside cells causes loss of water from cells
What do you drink to relieve osmotic thirst?
Where is the receptor location for osmotic thirst
OVLT, a brain area adjoining the third ventricle
What are the hormone influences involved in osmotic thirst?
Usually accompanied by vasopressin secretion to conserve water
What causes hypovolemic thirst?
Low blood volume
What do you drink to relieve hypovolemic thirst?
Water containing solutes
Where are the receptor locations for hypovolemic thirst?
- Receptors measuring blood pressure in the veins
- Subfornical organ, a brain area adjoining the third ventricle
What is the hormonal influence of hypovolemic thirst?
Increased by angiopressin II
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