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The exchange of gases actually takes place in the alveoli. some of the oxygen in the air that you breathe in moves through the alveoli into narrow capillaries. From there it moves into the red blood cells.

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You'll need protection in the respiratory system. Epiglottis is a tissue that stops

food from going down into your lungs. If the food does manage to pass it and go

down the wrong way, a cough will bring it back up.

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When you breathe in, you take in the mixture of gases called air. Oxygen and carbon dioxide are gases found in the air around you. Oxygen makes up about 21% of the air, while carbon dioxide make up only about 0.04%

So when you breathe in you will breathe more oxygen and less carbon dioxide but when you breathe out the scientists found out that you will actually breathe out less oxygen and breathe out more carbon dioxide!

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Your lungs actually look like a tree upside down. Because of the short and find bronchioles which look like leaves/branches and the bronchus which looks like a fat trunk on a tree

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Basic diagram respiratory system in our body.

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Basic diagram respiratory system in our body.

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Breating is controlled by the respiratory centre in the brain.

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Your body will automaticly breath 15 to 20 times per minuite.