Which of the following are functions of the kidneys? I. They produce insulin II. They filter wastes out of the blood III. They produce urine

I & III

Explanation: Healthy kidneys filter about a half cup of blood every minute, removing wastes and extra water to make urine. The urine flows from the kidneys to the bladder through two thin tubes of muscle called ureters, one on each side of your bladder. Your bladder stores urine.

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