Sem I Mini III Respiratory Physio
Terms
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 When a person is standing blood is ____ at the apex of the lung and ____ at the base of the lung.
 lowest, highest
 _____ circulation is the blood supply to the conducting airways.
 bronchiole
 Quiet breathing involves inspiration and expiration the ____ volume, equal to ___ liters.
 tidal, .5
 The additional volume that can be inspired over tidal volume is the _____, equal to _____.
 inspiratory reserve, 3L
 The additional volume that can be expired after tidal volume is the _____ volume, equal to ____.
 expiratory reserve, 1.2 L
 The volume of gas remaining in the lungs after a maximal forced expiration is the ___, equal to ____ liters.
 residual, 1.2L
 ___ is the volume of gas that can not be directly measured by a spirometer, while ___ and ___ are the capacities.
 residual volume, TLC, Function reserve capacity
 Tidal volume plus inpiratory reserve volume equals _____
 inspiratory capacity (3.5L)
 Expiratory reserve volume plus residual volume equals ______.
 functional residual capacity (2.4L)
 ____ is the volume remaining in the iungs after a normal tidal volume is expired.
 FRC
 _____ is the equilibrium volume.
 FRC
 ____ is the inspiratory capacity plus the expiratory reserve volume
 vital capacity (4.7L)
 Vital capacity plus residual volume equals ____.
 total lung capacity
 The volume that can be expired after maximal inspiration is the ____.
 vital capacity (4.7L)
 Two methods to measure FRC are ___ and ____.
 helium dilution and body plethysmography
 The ____ dead space is the volume of the conducting airways.
 anatomical
 The ____ dead space is the total volume of the lung that does not participate in gas exchange.
 physiological
 The ____ dead space is the dead space in the alveoli.
 functional
 The most impt reason alveoli dont participate in gas exhange is a mismatch of ____ and ____.
 ventilation, perfusion (ventilation/perfusion defect)
 The Fowler method measures ____ dead space.
 anatomical
 The Bohr method measures ____ dead space and the equation is _____.
 physiological, Dead space volume= Tidal volume x (PCO2 of aterial blood PCO2 of expired air)/PCO2 of arterial blood
 If dead space volume is equal to tidal volume then PCO2 of expired air is equal to _____.
 0
 Minute ventilation is ____ x _____.

tidal volume, breaths/min
(ml/min)  ____ ventilation is minute venilation corrected for physiological dead space, and the equation is _____.
 alveolar, alveolar ventilation= (tidal volume physiological dead space) x breaths/min
 Increases in alveolar ventilation cause a ____ on PACO2.
 decrease
 CO2 production and alveolar ventilation are ____ proportional.
 directly
 Alveolar ventilation and alveolar PCO2 are _____ related.
 inversly
 The major muscle of quiet inspiration is the ____, while forced are the ____, ____, and ____.
 diaphram, external intercostals, sternocleidomastoid, scalenes
 Inspiration is a ___ process, forced or labored inspiration is a ___ process, expiration is a ____ process, and forced expiration is a ____ process.
 active, active, passive, active
 ____ results from the relaxation of the inspiratory muscles and compression of the thorax, while ____ occurs though contraction of abdominal muscles.
 expiration, forced expiration