Wednesday 15 May 2013

Function of Respiratory System.

The respiratory system makes us breathe. Brings oxygen into our body and takes carbon dioxide out. Our lungs put the oxygen into our blood cell and takes out carbon dioxide from the used blood cell. when your breathing your inter-coastal muscles contract and allows air to come in. Diaphragm and inter-coastal let us breathe, our lungs don't do much work. Our nose and mouth is only way air can get in. Our nose hair, because to clean the air we take in. It stops all the bacteria and molecules that are in the air. Epiglottis is what stops food getting into our Respiratory System. The Epiglottis closes when were eating, so food doesn't go into the Respirator System. We have Bronchi ( one entering each lung). The Bronchi splits up into loads of tubes and those tubes make everything happen, also make the change as well. The Alveoli makes gaseous exchange. The Alveoli have small thin wall. Only two muscles make the breathing happen. Diaphragm is the muscles below the lungs that create a vacuum and the other one is the inter-coastal muscle. The inter-coastal muscle is in the gap between two ribs.

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