Respiratory system
Transcript of Respiratory system
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Respiratory system.
All our muscles and organs need oxygen to function.
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We breathe in Oxygen.
We breathe out carbon dioxide.
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Oxygen enters our blood when we breathe in.
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Carbon dioxide leaves our body when we breathe out.
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The respiratory system is made up of:
NostrilsWindpipe
Bronchi
Lungs
Diaphragm
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The air enters the nostrils
The nostrils have lots of little hairs to stop any object (like dust and insects).
When an object gets in, we sneeze it out.
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The air passes through the
windpipe (or trachea).
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The trachea is divided in two tubes called bronchi.
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In the lungs there are alveoli.
Oxygen passes into the blood.
Carbon dioxide passes into the air.
Alveoli are little sacks sorrounded by blood capillaries.
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When we breathe in
Our diaphragm goes down
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When we breathe out
Our diaphragm goes up
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And in a secret laboratory in mystery town…
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A very clever scientist investigates the respiratory system…
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To be continued…