Biology

What "trapdoor" on your windpipe helps keep out food particles?

More Questions from Biology
Which of these is not one of the four lobes in the hemispheres of the brain?
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In addition to mucus, what helps your nose filter out germs and dirt?
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How many main kingdoms are there in the living world?
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What are the thin bones that protect your lungs and heart?
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What fluid-filled sac surrounds the human embryo?
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Natural pearls are found in what sea creature?
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What is needed to make proteins?
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Which of the following organs is not used during digestion?
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