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smoking why do it

SMOKING AFFECTS THE RESPIRATORY SYSTEM. Many of the air passages in the breathing system are lined with tiny hairs called cilia.Tobacco smoke paralyses these cilia.Cilia keep the airways clear and free from dust

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smoking why do it

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    1. SMOKINGWHY DO IT?

    2. SMOKING AFFECTS THE RESPIRATORY SYSTEM Many of the air passages in the breathing system are lined with tiny hairs called cilia. Tobacco smoke paralyses these cilia. Cilia keep the airways clear and free from dust & bacteria

    3. If the cilia cannot work or are damaged the bronchial tubes become clogged up with mucus & dirt. Blocked bronchial tubes make breathing difficult. Blocked bronchial tubes are more likely to become infected The phlegm becomes green and smelly

    4. Cells lining the bronchus- here there are no cilia- they have been damaged by the nicotine

    5. EMPHYSEMA

    6. Emphysema means full of air Coughing due to dirt & phlegm in the breathing system splits the tiny delicate air sacs in the lungs This reduces the the surface area for gas exchange so makes breathing harder The air sacs also lose their elasticity and so cannot get rid of the air so easily A person with emphysema has to really work hard to breath out Their lungs are always full of air The size of their chest cage increases so they have a huge barrel shaped chest.

    7. Lung tissue blackened by smoke and showing large spaces due to emphysema.

    8. Emphysema- these large spaces are due to the breakdown of the air sacs in the lungs

    9. The centre of the lung on the previous slide has damaged air sacs. There are huge spaces. There are also black spots from the smoke This lung damage which causes emphysema is irreversible It makes breathing very difficult. If you can’t breath what else can you do? –not a lot!

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