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BIOLOGY

JAMB 2011 - Question 25

Biology 2011 JAMB Past Questions - Question 25: Which of the following organs regulates the levels of water, salts, hydrogen ions and urea in the mammalian blood?

Choose the most appropriate option for the gap .

Which of the following organs regulates the levels of water, salts, hydrogen ions and urea in the mammalian blood?

A: Bladder.

B: Colon

C: Liver.

D: Kidney.

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Correct Answer

Explanation

Kidney excretes urine which is exposed of urea, excess salts and water. Liver mainly regulates the amount of sugar, lipids and amino acids among others. Urinary bladder stores urine while colon is part of the large intestine where w a t e r is r e a b s o r b e d f r o m t h e undigested food before it is stored in the rectum.