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← Human Body & HealthIf a desert hiker consumes very salty food with limited water, which consequence follows concerning their thirst mechanism and renal function?
A)Reduced ADH, increased urine output
B)Increased ADH, enhanced water reabsorption✓
C)Suppressed thirst, decreased plasma osmolality
D)Increased GFR, inhibited sodium reabsorption
💡 Explanation
Increased salt intake raises plasma osmolality, triggering the hypothalamus to stimulate thirst and increase ADH secretion; because ADH enhances water reabsorption in the collecting ducts, urine output decreases, therefore the correct answer is increased ADH and water reabsorption, rather than decreased urine output or suppressed thirst.
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