UC Irvine School of Medicine

Your Lungs, Smoking and Your Health

Dr. Jennifer (Declan’s Mom)May 20, 2010

Discover.Teach.Heal

UC Irvine School of Medicine

Anatomy!

• Air in thru your nose (nasopharynx)

• And thru your mouth (oropharynx)

• Down your trachea• To your lungs via bronchi• To alveoli (Oxygen moves

into red blood cells)

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Alveoli You have 500

million alveoli

• Healthy alveoli have thin walls so oxygen can move into your blood

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Muscles ‘pull’ air into your lungs

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Take a deep breath!

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Real lungs: Like a balloon

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Breathing Math

• Each breath = 1 soda can of air• 24 breaths every minute = 2600 gallons/day• A million gallons every year!

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Healthy Lungs Stay Clean

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You have built in air filters!

• 1: Nose hairs• 2: Sweeping

brooms in your trachea

• 3: Pac-Men in your lungs

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Smoking hurts Lungs!• 1. Hurts your built-in

air filters• 2. Smoke collects in

your lungs• 3. Makes scar tissue

in your lungs• 4. Damages alveoli• 5. Causes cancer!

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Cigarette Smoke contains:

• Tar • Nicotine• Carbon monoxide• 4000 other toxic chemicals• More than 40 things that cause cancer

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Smoking causes lung cancer

• Non-Smoker Cancer in a Smoker’s lung

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Smoking causes emphysema

• Smoke damages alveoli

• Fewer alveoli = less ability to breathe

• No fun to be short of breath all the time…..

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Smoking hurts your blood vessels

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All tobacco is bad for you!

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Even smokeless tobacco causes cancer

Non smoker Tongue cancer fromchewing tobacco

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Keep your body healthy. Don’t ever smoke!