Digestive System Quiz

The kidneys filter the blood about ____ times per day.

A. 10

B. 20

C. 30

D. 40

Select your answer:
A  B  C  D  E 


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Other quiz: Circulatory System

What is a part of the circulatory system?

A. Heart, brain, muscle, skeleton

B. Heart, Veins, Arteries, Capillaries

C. Spine, Veins, Brain, Small Intestine

D. Bones, Muscle, Kidneys, Nerves