Which is Not a Major Function of the Kidney

Question

Which is not a major function of the kidney?
A)regulation of blood ionic composition
B)regulation of blood cell size
C)regulation of blood volume
D)regulation of blood pressure
E)regulation of blood pH

Accepted Answer

The regulation of blood cell size is not a major function of the kidney. The other choices (ionic composition, blood volume, blood pressure, and blood pH) are major functions of the kidney.