Question 1 of 5
Where does chewing begin the physical breakdown of food?
Answer & explanation
Mouth
Chewing breaks food into smaller pieces at the start of digestion.
A LITTLE EVERY DAY. A WORLD TO DISCOVER.
5 questions · Untimed · Free
Get to know a few of the systems that keep us going. These five questions connect digestion, the brain, joints, and community health with clear explanations of how they work.

Question 1 of 5
Mouth
Chewing breaks food into smaller pieces at the start of digestion.
Question 2 of 5

Stomach
The stomach churns food and mixes it with acid and enzymes.
Question 3 of 5
Brain
The brain lies inside the skull, whose bones help protect this central organ of the nervous system.
Question 4 of 5
A place where bones meet
A joint is the place where bones meet; many joints allow movement while others mainly provide stability.
Question 5 of 5

Testing a community's drinking-water supply
Monitoring a shared water supply can protect many people who use it, even before illness is reported.

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FROM ANSWERING TO UNDERSTANDING
Identify whether each question asks about a structure, a function or a prevention measure. After reading the explanation, describe the idea in one sentence. This is a general learning quiz, not an assessment of your personal health.
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