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The Respiratory Process
  
pulmonary-circulationby bobo615 on Flickr

On average, a human breathes over 20,000 times a day. Breathing, or respirations, are necessary for life because the body needs oxygen to survive. When breathing, the respiratory system takes in oxygen (inhale) and brings it into the blood stream to take to all the cells. When you exhale, it is the reverse process and you breathe out carbon dioxide.
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nasal_cavity_lateralby mackarus on Flickr

The respiratory process begins when a person inhales oxygen through their nose or mouth. From there, the oxygen must go through a network of tubes for the body to get it's supply of oxygen.  Beginning at the nasal cavity, the air then goes to the pharynx canal which leads it to the larynx, or voice box. From the larynx it goes through the trachea (windpipe). The passageway can be seen in the side picture.
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Heart & Lungsby Debs (ò‿ó)♪ on Flickr

After going through the trachea, the oxygen goes into the bronchial tree in the center of your chest. Like this tomato, the bronchial tree begins in the center then branches out. The branches, or bronchioles, are attached to the lungs.Once in the lungs the actual air goes in to small air sacs, called alveoli, similar to the holes in a sponge.These alveoli are surrounded by capillary walls, and the oxygen dissolves into them; directly into blood flow. The oxygen solution is then absorbed by passing red blood cells and distributed through the body.
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Spectacular Yoga stunt by Actress, Model & Yogist Lynzabel Leeby HenryLeongHimWoh on Flickr

Healthy lungs and breathing is very influenced by daily exercise. Exercises such as yoga help people to be able to control their breathing and be able to hold their breath for longer, so be sure to avoid smoking and stay healthy with routine exercise.
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