BMS 360 Study Guide - Quiz Guide: Chronic Obstructive Pulmonary Disease, Tidal Volume, Airway Resistance

101 views5 pages
22 May 2014
School
Course
Professor

Document Summary

Chronic obstructive pulmonary disease (copd): major cause of disability and death. Emphysema: lung tissue loss around alveoli, causing airway collapse. Difficult to inflate lungs due to loss of elastic tissue. Excess mucous production in the bronchi, causing obstruction; chronic inflammation of small airways. Tidal volume: volume of air inhaled or exhaled in a single breath. Inspiratory reserve volume (irv): the maximum volume in deep inspiration (minus the relaxed tidal volume) Functional residual capacity: volume of air remaining in the lungs after normal relaxed expiration. Residual volume: amount of air remaining in lungs after maximal exhalation. Expiratory reserve volume (erv): volume that can be exhaled with maximal effort, less the relaxed tidal volume. Vital capacity: the maximal volume of air that can be exhaled after maximal inhalation. Equals (tidal volume + irv + erv) = about 4. 7 l. Forced expiratory volume 1 sec (fev1): maximum inhalation followed by expiration as fast as possible in 1 sec.