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Question
Biology
Posted 9 months ago
If a hiker is dehydrated and they don't have enough water in their system, leading to high concentrations of electrolytes, which thirst are they suffering from?
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Answer from Sia
Posted 9 months ago
Answer
The hiker is suffering from osmotic thirst.
Solution
a
Osmotic thirst occurs when there is a high concentration of electrolytes (such as sodium) in the body, which draws water out of cells, leading to cellular dehydration
b
This type of thirst is triggered by osmoreceptors in the hypothalamus that detect the increased osmolarity of the blood
Key Concept
Osmotic thirst
Explanation
Osmotic thirst is caused by an imbalance in the concentration of electrolytes and water in the body, leading to cellular dehydration. This is detected by osmoreceptors in the hypothalamus, which then trigger the sensation of thirst to encourage water intake and restore balance.

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