partsofrespiration

partsofrespiration - 5/8/11 5/8/11 Alveoli Depressions in...

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 5/8/11 Click to edit Master subtitle style Trachea n 11-12cm in length; 2-3cm in diameter n 16-20 horseshoe shaped rings of  hyaline cartilage rings give structure n Bounded by esophagus (post.), larynx  (sup.), and bronchi (inf.) n Lined by ciliated epithelium
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 5/8/11 Bronchi Main stem, to left and right lungs Lobar (secondary) bronchi 3 right; 2 left Segmental (tertiary) bronchi 10 right; 8 left Bronchioles (24 generations of branching from  tertiary Sum of flow capacity in branches is always greater 
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Unformatted text preview: 5/8/11 5/8/11 Alveoli Depressions in the walls of the terminal bronchioles Site of 02-CO2 exchange 5/8/11 Lungs Spongy & elastic due to passive mechanical forces Surface tension & tissue elasticity Pulmonary surfactant decreases surface tension Right lung larger than left Capacity is 4-5L of air Lungs subdivisions and landmarks: apex, base, costal surface, mediastinal surface, oblique 5/8/11 5/8/11 5/8/11...
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partsofrespiration - 5/8/11 5/8/11 Alveoli Depressions in...

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