How Bronchitis Symptoms Affect The Respiratory System.
Did you know that every minute you breathe in and out around 20 times? That’s roughly 25 000 times a day. Amazing isn’t it, considering that you don’t have to think about it, until something goes wrong with this natural process.
When you breathe in, you draw air into your lungs. You don’t know what you’re breathing in, but you make the assumption that it is okay. The every day air that we breathe contains lots of things, such as pollutants like smoke, chemicals etc, irritants like pollen and dust and germs like colds and flu. When you breathe the air in, it goes in your nose and mouth (where it is filtered, heated and moistened), down the windpipe (trachea), which divides into two smaller tubes called the bronchi, and then into even smaller tubes called bronchial tubes. The bronchial tubes then turn into many other smaller tubes which end in little sacks called alveoli – two average adult lungs hold about 600 million of these (flattened out, they would cover about a third of a tennis court), surrounded by capillaries. This is how the air gets into your lungs. The lungs inflate (expand), the oxygen in the air is put into the blood (via the capillaries) to be taken around your body. The waste products (carbon dioxide) are expelled from the capillaries into the alveoli, and follow the path that the air took on the way in, and the lungs deflate (go down).
As the air is taken into your body, there are little hairs along the way that filter out germs, irritants and pollutants. These little hairs are called cilia, and they capture the bits your body doesn’t want, pushing them towards the nostrils (where they can be blown out) or towards the opening of the throat (where they will be carried to the digestive system to be taken out with waste).
Cigarette smoking can damage the cilia, meaning smokers are more susceptible to infection as the cilia can’t filter out the germs. Damaged cilia will also lead to bronchitis as they can’t prevent pollutants and irritants from entering the respiratory system, in turn causing a build up of mucous in response to the irritation. You then need to continually cough to get rid of the mucous – one of the main bronchitis symptoms.
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