Vowel Sound Production
As you read in Chapter 8, our respiratory system allows us to communicate as well as breathe. This site presents an exhibit at San Francisco's Exploratorium that shows how we communicate different vowel sounds. Listen to how the sounds produced by air vib
Visit the Exploratorium, Vocal Vowels web site
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Effects of Environmental Tobacco Smoke
In Chapter 8's Health Note 9-2, you learned that in smokers or people exposed to environmental tobacco smoke, carbon particles of tobacco smoke accumulate in the walls of the lung's air sacs, the alveoli. The alveolar walls become thickened and black. At
Visit the The Biology Project web site
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