Blood is cleaned by __________?
Correct answer: B. Kidneys
- A. Lungs
- B. Kidneys
- C. Heart
- D. Liver
Explanation
The kidneys clean the blood by filtering wastes, excess salts, and water to form urine. The liver also detoxifies substances, but routine filtration of blood is chiefly a kidney function.
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About Human Body and Health
The human body is studied through its organ systems, including digestion, respiration, circulation, excretion, nervous coordination, reproduction and immunity. Coverage also includes nutrients and deficiency diseases, hormones, blood groups, common infections, vaccines, sanitation and basic first aid, while distinguishing communicable diseases from inherited and lifestyle disorders.
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