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If you removed the alveoli, opened them, and spread them out on a flat surface you would have a surface area of about 70 square meters. That is about the area of 3 lanes in a bowling alley.

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In adults, lungs contain about 300,000,000 alveoli.

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after the air enters the alveolus oxygen passes through the wall of the alveolus and then through the capillary wall into the blood. Carbon dioxide and water pass from the blood into the alveolus.

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Air contains micro-organisms, some of which can cause disease in humans

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Bronchitis can affect your Respiratory System because the mucus building up from the bronchitis can slow your breathing.

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The process of how you breath.

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How Does This System Work With Other Systems?

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How Does This System Work With Other Systems?

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It helps the oxygen go to your brain. It also helps the blood flow to your heart. Increase of oxygen helps the blood and the oxygen go to your heart and brain faster.

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One Disease or Problem That Associates With the Respiratory System 

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One Disease or Problem That Associates With the Respiratory System 

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Lung cancer is associated with smoking tobacco. You can also get mouth cancer from smoking cigarettes or chewing tobacco.

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*lungs-main organs of the respiratory system
*Respiration-the process by which the oxygen and glucose undergo a complex series of chemical reactions inside cells
*nose-air enters the body mostly through the nose sometimes the mouth
*pharynx- is another word for the throat
*larynx- voice box
*trachea-  or the wind pipe is  the passage through which air moves in the respiratory
*bronchiole- passageways which air passes through the nose or   mouth to the alveoli or the air sacs of the lungs,
*bronchus-the passage that direct air into the lungs
*alveoli- tiny scales of lung tissue specialized for the movement
*diaphragm- a dome shaped muscular partition separating the the thorax from the abdomen
*cilia- tiny hairlike extensions that can move together like a whips.The cilia sweeps the mucus into the throat where you swallow
*vocal cords-folds of connective tissue that stretch across the opening of the voice box and produces a persons voice

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moves oxygen from the outside environment into the body it also removes carbon dioxide and water from the body.