docdoc9
Forum Elite
Topics: 28
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Hi
Where is the maximum osmolarity present in renal tubules:
Kaplan says irrespective of the action of ADH it is tip of loop of henle
But uw says that without maximum action of ADH it is tip of loop of henle but with maximum action it is medullary collecting duct
Pls clarify.........
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| pr20
Forum Senior
Topics: 20
Posts: 168
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What kaplan says is correct---irrespective of the action of ADH it is the tip of loop of henle that represents the point with the highest osmolarity.In the absence of ADH,the osmolarity of the collecting duct fluid can increase to(up to 1200 mOsm/L),but never exceed,the osmolarity in the interstitium at the tip of the loop of henle.
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| docdoc9
Forum Elite
Topics: 28
Posts: 221
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Thanks pr20.Even I was thinking that only but there were some 2 q's in uw i think regarding this concept
Thanks once again
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| pr20
Forum Senior
Topics: 20
Posts: 168
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You are welcome.
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