Bronchitis is an inflammation of the lining of your bronchial tubes, which carry air to and from your lungs. Bronchitis may be either acute or chronic.
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The arrival of winter heralds the season of colds, flu and many other respiratory illnesses. To help you better understand where problems may occur, here is a brief review of how the respiratory system works. Every time you breathe, air enters through your nose or mouth, continues down your windpipe (trachea) and into the lungs. The air travels through bronchial tubes (bronchi) in the lungs until it reaches tiny air sacs (alveoli) at the end of the passageways. In the air sacs, there is an exchange of oxygen and carbon dioxide. Oxygen is passed into the bloodstream, and carbon dioxide is passed back from the bloodstream into the air sacs to be exhaled out of the body. Without a constant supply of oxygen, the cells in the body cannot function. Two common types of respiratory infections are BRONCHITIS and PNEUMONIA. continue reading »
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