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How Our Body Works
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What is the breaking down of food into a simpler form called?
Digestion
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Where does digestion begins?
Mouth
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What breaks down the food in Stomach?
Digestive juices
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Which organ system uses oxygen to break down food to get energy?
Respiratory system
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When we breathe out, this gas leaves the lungs through the nose.
Carbon di oxide
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Which organ has tiny air sacs?
Lungs
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Which organ absorbs water from the undigested food?
Large Intestine
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What protects the lungs from getting injured?
ribcage
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How many permanent teeth do we have?
32
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Which is the hardest substance in our body?
Enamel
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Which is the harmful sticky substance formed on the tooth?
plaque
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