Urology/Kidney/Tubules/WaterReabsorption/ControlToSweating/basic

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POINT!
SweatingBeforeBasicFeedbackToWaterReabsorption-ENG.jpg

① Sweating increases plasma osmolarity, and the water reabsorption decreases plasma osmolarity. These effects are in the opposite direction (blue).

SweatingDuringBasicFeedbackToWaterReabsorption-ENG.jpg

② Since these effects are in the opposite direction (blue), negative feedback increases (red) the water reabsorption. The plasma osmolarity-decreasing effect of the water reabsorption becomes stronger, and plasma osmolarity returns to normal.

Challenge Quiz

1.

Sweating increases decreases plasma osmolarity, and the water reabsorption increases decreases plasma osmolarity. Since these effects are in the same opposite direction, negative feedback increases decrease the water reabsorption.