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How lungs work:

When you breathe in your diaphragm contracts and your ribcage expands. To enter your lungs air needs to go through the trachea. A Human has only two lungs. Bronchial tubes are passage ways inside your lungs. The diaphragm is the muscle that allows you to breathe in and out. Oxygen cannot be stored in your body. When a human breathes out their body gets rid of carbon dioxide. Capillaries are tiny blood vessels. Alevoli are small sacs in your lung which store air. Emphysema can be caused by smoking.

Asthma:


Asthma is a common condition for the lungs. An asthma attack is similar to a heart attack since they both usually involve the constricting of an interval vessel. The direct cause for an asthma attack is swelling and excess mucous in the airways. Inhalers can help people with asthma subdue their attacks. Living close to a smokestack would be dangerous for people with asthma. Intense anger and stress can cause an asthma attack. Asthmatics should always carry their inhalers with them.


Smoking:


The main ingredient of a cigarette is tobacco. The addictive chemical inside a cigarette is nicotine. Your lungs take in oxygen and take out carbon dioxide. Smokers who try to play sports develop shortness of breathing and cramps. A smokers lung is usually black. Tar is a carcinogen that covers a smokers lung. Smoking causes straight away symptoms of coughing and bad breath. Cancer, emphysema, and heart attacks are the long term illnesses that are associated with smoking. It is difficult to quit smoking because of nicotine. Smoking can cause a deadly disease which is lung cancer.