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A.  Lung volumes and their measurement

                                                                       Lung Volumes and their Measurement













                                       Water


                                                                       Plate 5.4

                                                  Spirometer
                 Residual volume
                 Functional residual
                  capacity (FRC)
                  Vital capacity
                 Total lung capacity
                                              Paper feed
                                Maximum
                                inspiration                +3

                 Inspiratory
                reserve volume                             +2
                  (ca. 3L)

                            Normal                            Lung volume (L BTPS )
                           inspiration                     +1
         Total lung capacity  Vital capacity  Expiratory  Baseline (resting)  0
                 Tidal volume
                  (ca. 0.5L)
                                             value
             FRC
                reserve volume
                 (ca. 1.7L)
                                        Maximum            –1
                                        expiration
                                                           –2
               Residual volume (ca. 1.3L) (not measurable by spirometry)
                                                                     113
                                                           –3
       Despopoulos, Color Atlas of Physiology © 2003 Thieme
       All rights reserved. Usage subject to terms and conditions of license.
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