What would be true about the role of collecting duct in the concentration of urine by the kidneys?
I: Allows passage of small amounts of urea into the medullary interstitium
II: Large amounts of water could be reabsorbed from this part to produce a concentrated urine.
 
1. Only I 2. Only II
3. Both I and II 4. Neither I nor II
Subtopic:  Nephron Part 1 | Nephron Part 2 | Concentration of Urine |
 81%
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Aderenal cortex releases aldosterone when activated by:
1. ADH
2. Low potassium concentration in ECF
3. Angiotensin II
4. Renin

Subtopic:  Concentration of Urine |
 75%
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