Lung Volumes and Capacities (TV): The volume of air breathed in and out without conscious effort Tidal Volume (IRV): The additional volume of air that can be inhaled with Inspiratory Reserve Volume maximum effort after a normal inspiration (ERV): The additional volume of air that can be forcibly exhaled Expiratory Reserve Volume after normal exhalation (VC): The total volume of air that can be exhaled after a maximum inhalation: Vital Capacity VC = TV + IRV + ERV (RV): The volume of air remaining in the lungs after maximum exhalation (the Residual Volume lungs can never be completely emptied) (TLC): = VC + RV Total Lung Capacity The volume of air breathed in 1 minute: (TV)(breaths/minute) Minute Ventilation: Data: Volume Individual (L) Class Average Class Average Measurement (L) (male) L (female) L Tidal Volume (TV) Inspiratory Reserve (IRV) Expiratory Reserve (ERV) Vital Capacity (VC) Residual Volume 1.5 1.5 1.5 Total Lung Capacity (TLC) Data analysis: What was your Tidal Volume? What would you expect your TV to be if you inhaled a foreign object which completely obstructed your right mainstem bronchus? Describe the difference between lung volumes for males and females. What might account for this?
Lung Volumes and Capacities Tidal Volume (TV): The volume of air breathed in and out without conscious effort Inspiratory Reserve Volume (IRV): The additional volume of air that can be inhaled with maximum effort after a normal inspiration Expiratory Reserve Volume (ERV): The additional volume of air that can be forcibly exhaled after normal exhalation Vital Capacity (VC): The total volume of air that can be exhaled after a maximum inhalation: VC = TV + IRV + ERV Residual Volume (RV): The volume of air remaining in the lungs after maximum exhalation (the lungs can never be completely emptied) Total Lung Capacity (TLC): = VC + RV Minute Ventilation: The volume of air breathed in 1 minute: (TV)(breaths/minute) Data: Volume Measurement (L) Individual (L) Class Average (male) L Class Average (female) L Tidal Volume (TV) Inspiratory Reserve (IRV) Expiratory Reserve (ERV) Vital Capacity (VC) Residual Volume 1.5 1.5 1.5 Total Lung Capacity (TLC) Data analysis: What was your Tidal Volume? What would you expect your TV to be if you inhaled a foreign object which completely obstructed your right mainstem bronchus? Describe the difference between lung volumes for males and females. What might account for this?