Selasa, 26 Agustus 2008

HUMAN RESPIRATORY SYSTEM


Do you know what helps your body get oxygen from the air? Right . It's respiratory system .Can you tell me the most important organs in the respiratory system? Yes, your nose,mouth,trachea, lungs, .The followings are the phases of the respiratory system.
1.Breathing in or inhalation. In this phase air brought outside the body into the lung.
2.The movement of carbon dioxide from the cells to the bloodstream
3. Breathing out or exhalation in lungs.
Well, thus completing the respiration cycle. Bye

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