Alveoli are tiny air sacs in our lungs where oxygen from the air enters our blood, and they are surrounded by tiny blood vessels called capillaries that help bring the oxygen to our bodies and take away carbon dioxide.
This explanation helps 8-year-olds understand how alveoli work with blood vessels in the lungs.
Alveoli are tiny air sacs in our lungs where oxygen from the air enters our blood, and they are surrounded by tiny blood vessels called capillaries that help bring the oxygen to our bodies and take away carbon dioxide.
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