Medical MCQ-A 50 years old male patient travels alone in a remote village of Rajasthan was not on any food or water for the past 24 hours. Urine osmolality is 1150 mOsm/Kg. The major site of water reabsorption is

A 50 years old male patient travels alone in a remote village of Rajasthan was not on any food or water for the past 24 hours. Urine osmolality is 1150 mOsm/Kg. The major site of water reabsorption is

Proximal tubule

Henle's loop

Distal tubule

Medullary collecting duct

Question Category:

Physiology

Correct Answer:

Proximal tubule

Description:

Answer: a) Proximal tubuleWater Transport along the NephronSegmentPercentage of Filtrate ReabsorbedMechanism of Water ReabsorptionHormones That Regulate Water PermeabilityProximal tubule67%PassiveNoneLoop of Henle15%Descending thin limbonly; passiveNoneDistal tubule0%No water reabsorptionNoneLate distal tubule and collecting duct~8%-17%PassiveADH, ANP, BNP*Atrial and brain natriuretic peptides inhibit antidiuretic hormone-stimulated water permeability

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