The diagram below shows a nephron of the mammalian kidney. � – McqOptions

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1.	The diagram below shows a nephron of the mammalian kidney. Which one of the regions (marked as 1, 2, 3 and 4) is the main region responsible for restoring the metabolic level of the blood plasma to its pre- renal level?
A.	Region 1
B.	Region 2
C.	Region 3
D.	Region 4
Answer» C. Region 3

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