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1. What environment is the filtrate at the end of the descending LoH
- Hypertonic
- Isotonic
- Hypotonic
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2. What hormone and where is H20 reabsorption regulated in?
- Anti Diuretic Hormone
- Aldosterone
3. What value is it for the body fluids to become hypo-osmolar?
- not 285mosm/Kg H2O
- < 285mosm/Kg H2O
- = 285mosm/Kg H2O
- > 285mosm/Kg H2O
4. Why is the PCT isotonic?
- Similar H2O and solute reabsorption into the peritubular capillaries
- ADH release aquaporin insertion, therefore H2O reabsorption
- Loss of solute into the interstitum and some into the vasa recta, no H2O reabsorption
- Loss of H2O reabsorption into the vasa recta, no solute reabsorption
- Some solute reabsorption from DCT and CD, but no ADH release, no aquaporin insertion, therefore no H2O reabsorption
5. What is the urine volume with maximal ADH?
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