sigh
Forum Senior
Topics: 15
Posts: 152
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A certain substance, which is both freely filtered and secreted, is being maximally secreted. As the plasma concentration of the substance increases, the renal clerance
A. decreses and approaches that of inulin.
B. increases and approaches that of inulin.
C. increases to the renal plasma flow.
D. will decrease to zero.
E. will remain the same.
Please explain it for me
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| drgho
Forum Junior
Topics: 1
Posts: 114
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A.... Secretion system will become saturated and and only filtration becomes the lone source of clearance.
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| spinal shock
Forum Junior
Topics: 7
Posts: 63
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clearance=urine conc of a subs*urine flow rate/plasma conc of subs
so you can see that clearance is inversely propotional with plasma conc and since its maximall secreted it means its clearance is larger than its GFR so A
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| sigh
Forum Senior
Topics: 15
Posts: 152
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Need to study renal physio... Great job! A is correct. The question is from Kaplan Q-bank and only 30% of people got this one correct...I got myself in 70%...Oh...
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| taipei817
Forum Newbie
Topics: 1
Posts: 68
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A, secretion system is saturated and additional amount of substance will go back to the body as if the kidney were not secreting these addtional substances at all.
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