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Parts of the Respiratory System. The Lungs. larynx. bronchus. trachea. bronchioles. lung. Breathing. Involves the diaphragm When diaphragm contracts, chest cavity expands, air comes in When the diaphragm relaxes, chest cavity becomes smaller, air goes out
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The Lungs larynx bronchus trachea bronchioles lung
Breathing • Involves the diaphragm • When diaphragm contracts, chest cavity expands, air comes in • When the diaphragm relaxes, chest cavity becomes smaller, air goes out • Due to pressure differences inside and outside the body
Respiratory System - Alveoli • Gas exchange takes place in the capillaries of the lungs called the alveoli. • responsible for the exchange of gasses (oxygen and carbon dioxide) in the body.
epiglottis Vocal cords trachea Vocal Cords • Found in your larynx • Responsible for voice and sound. • Air passes over the vocal cord to produce sound. • Can be damaged • nodules
Smoking and the Respiratory System http://www.cdc.gov/tobacco/sgr/sgr_2004/index.htm Go to the “flash” presentation of the Surgeon General’s Report on Smoking