Systemic infection with high fever can cause the kidneys to do what?

Systemic infection with high fever can cause the kidneys to do what?

• A. Increase urine production
• B. Reabsorb and retain water
• C. Decrease urine production
• D. Hydrate the body

Answer: (B)

When the body faces fever and infection, it risks losing fluids and becoming dehydrated. To protect circulating volume, signals like antidiuretic hormone (ADH) are released, increasing water reabsorption in the kidney’s collecting ducts. This makes the urine more concentrated and reduces urine output, effectively retaining water to hydrate the body. Increasing urine production would worsen dehydration, and simply labeling the outcome as hydration doesn’t explain the kidney’s mechanism. So the kidneys reabsorb and retain water.

When the body faces fever and infection, it risks losing fluids and becoming dehydrated. To protect circulating volume, signals like antidiuretic hormone (ADH) are released, increasing water reabsorption in the kidney’s collecting ducts. This makes the urine more concentrated and reduces urine output, effectively retaining water to hydrate the body. Increasing urine production would worsen dehydration, and simply labeling the outcome as hydration doesn’t explain the kidney’s mechanism. So the kidneys reabsorb and retain water.