lab respiratory Flashcards
tidal volume
amount of air inspired and then expired with each breath under resting conditions
inspiratory reserve volume
amount of air that can be forcefully expired after a normal tidal volume expiration
expiratory reserve volume
amount of air that can be forcefully expired after a normal tidal volume expiration
residual volume
amount if air remaining in the lungs after forceful and complete expiration
total lung capacity
maximum amount of are contained in lungs after a maximum inspiratory effort. TLC= TV+IRV+ERV+RV
Vital capacity
maximum amount of air contained in lungs after a maximum inspiratory effort. VC=TV+IRV+ERV
Forced vital capacity
Amount of air that can be expelled when the subject takes the deepest possible inspiration and forcefully expires as completely and rapidly as possible
Forced expiratory Volume
measures the amount of the vital capactiy that is expired during the first second of the FVC test.
the contraction of which muscle will increase the thoracici cavity volume during inspiration
the external intercostals
what happens at the beginning of inspiration
the thoracic cavity volume increases