the lungs. ~ the lungs are responsible for exchanging oxygen for carbon dioxide with the red blood...
TRANSCRIPT
The Lungs~ The lungs are responsible for exchanging oxygen for carbon
dioxide with the red blood cells. Once this oxygenated (oxygen-rich) blood travels back to the heart, it leaves the left ventricle and is sent to the body.
Parts of the Lungs
• Pharynx – Place where nose and mouth meet• Larynx – voice box; pieces of cartilage that vibrate to make
sound• Trachea – “wind pipe”; leads into the lungs• Alveoli – tiny air sacs where oxygen and carbon dioxide
exchange with the red blood cells• Diaphragm – muscle that controls breathing; when you inhale
the diaphragm contracts, when you exhale the diaphragm relaxes
• Bronchial tubes – tubes attached to the trachea
Above: Normal city dweller’s lung. Note black specks throughout - indicative of carbon deposits from pollution.
Smoker’s lung with cancer. White area on top is the cancer; this is what killed the person. The blackened area is just the deposit of tars that all smokers paint into their lungs with every puff they take.
To get a sense of how a lung is altered by smoking to cause emphysema, look at the pictures. This first one is a picture of an inflated non-smoker city dweller's lung.
Not only is the discoloration the issue, the lungs have literally been ripped out of shape making breathing extremely difficult and eventually impossible. To get a sense of what it feels like to breathe with emphysema, take a deep breath and hold it. Without letting out any air, take another deep breath. Hold that one too. One more time, take one more breath. OK… let it all out.
• How can YOU keep your lungs healthy?
• Can you be healthy if you have asthma?
• What should you do if you have a terrible cough that just won’t stop?
• What’s “second hand smoke”? Should you be concerned about it?
• If you are a singer, what should you do to keep your singing voice in tip-top condition?
• What will excessive SCREAMING do to your vocal cords and voice box?
• What can you say to a smoker to convince him/her to STOP SMOKING?
• Why are cigarettes called “coffin nails”?