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Trachea has stiff rings of cartilage to prevent it collapsing Bronchi Bronchioles Rib muscles to raise and lower the ribs Ribs to protect the chest Lung Alveoli (air sacs) gas exchange takes place here Diaphragm muscular sheet Alveoli are very good at exchanging gases because They have a LARGE surface area They have a good blood supply They are moist This picture shows cilia on the cells lining the airways

This procedure can identify: Inflammation Ulcers Strictures Barretts esophagus Hiatal hernias pH Monitoring This test measures acid exposure within the esophagus and helps confirm GERD

Well, they didn't need to do overt lobbying

I do enjoy this pipe Tobacco I like the mildness of it