The kidneys secrete
A) renin.
B) erythropoietin.
C) calcitriol.
D) hormones to regulate sodium ion concentration.
E) All of the answers are correct.
Answer: E
The kidneys secrete
A) renin.
B) erythropoietin.
C) calcitriol.
D) hormones to regulate sodium ion concentration.
E) All of the answers are correct.
Answer: E