Which structure is responsible for evaporative water loss?
skin
rectum
lung
kidney
The Correct Answer is A
A. skin: The skin loses water through insensible loss (evaporation) and perspiration.
B. rectum: Rectal water loss occurs via feces, not evaporation.
C. lung: The lungs lose water through vapor during exhalation, not evaporation.
D. kidney: Kidneys excrete water via urine, not evaporative loss.
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Related Questions
Correct Answer is C
Explanation
A. in the plasma: Plasma is the intravascular compartment.
B. in the vitreous: Refers to the eye, not a common fluid compartment in systemic fluid balance.
C. interstitial: Edema is the accumulation of fluid in the interstitial (third) space.
D. intracellular: Intracellular fluid is within cells, not the typical site of edema.
Correct Answer is D
Explanation
A. Skin: Some electrolytes are lost via sweat, but not the major route.
B. Lungs: Lungs excrete CO₂ but not most electrolytes.
C. Rectum: Some are excreted via feces, but the amount is minimal.
D. Kidney: The kidneys regulate and excrete electrolytes such as sodium, potassium, and calcium.
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