respiratory phys Word Scramble
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Question | Answer |
tidal volume | volume inspired or expired with each normal breath |
inspiratory reserve volume | volume that can be inspired over and above tidal volume |
expiratory reserve volume | volume that can be expired after the expiration of a tidal volume |
residual volume | volume that remains in the lungs after maximal expiration |
anatomic dead space | volume in conductin airways |
physiologic dead space | functional measurement, volume of the lungs that does not participate in gas exchange |
minute ventilation | tidal volume X respiration rate |
alveolar ventillation | ( tidal volume- dead space) X respiration rate |
Inspiratory capacity | sum of tidal volume and inspiratory reserve volume |
functional residual capacity | sum of expiratory reserve volume and residual volume; remains in lungs after tidal volume is expired |
vital capacity | volume of air that can be forcibly expired after maximal inspiration |
vital capacity | tidal volume + inspiratory reserve volume+ expiratory reserve volume |
muscels of inspiration | diaphragm and external intercostals |
muscles of expiration | normally passive, used during exercise; includes abdominal muscles and internal intercostals |
compliance of respiratory system | distensibility of lungs and chest wall; inversly related to elastance |
surfactant | reduces surface tension and increases compliance, is produced starting gestational week 24-35 |
surfactant | synthesized by type II alveolar cells and consits primarily of DPPC; lecithin:sphingomyelin ratio >2:! indicates mature levels of surfactant |
during rest | alveolar pressure equals atmospheric pressure, intrapleural pressure is negative |
during inspiration | alveolar pressure becomes negative causing a presure gradient, intrapleural pressure becomes more negative |
during expiration | alveolar pressure becomes postitive, intrapleural pressure returns to resting value |
Created by:
swohlers
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