waht are lungs made of? Are lungs made of muscles?How and do they contract?

Subject: waht are lungs made of? Are lungs made of muscles?How and do they contract?

Date: Sun Jun 18 18:00:12 2006
Posted by No name entered.
Grade level: 10-12 School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Anatomy
ID: 1150678812.An

Message:


I read up about lungs and how they exchange gases within the alveoli, but what 
are the lungs made of, are they just made up of bronchioles and alveoli only??
Do lungs have muscles? Do our lungs contract when we are breathing???
I hope you can help.Thanks. Have a nice day.

Re: waht are lungs made of? Are lungs made of muscles?How and do they contract?

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