Lungs Flashcards
What is the upper respiratory tract?
Nose, paranasal sinuses, pharynx, larynx
How would you measure airway resistance?
Volume of air expired in one second / forced breathing out
Tidal Volume?
Normal breathing, from expiration to inspiration. M= 500 mLs. F= 400mLS
Functional Residual capacity (FRC)?
After normal expiration the volume of air left in the lungs.
How would you calculate FRC?
FRC = Residual volume + Expiratory Reserve volume
Expiratory Reserve Volume (ERV)?
The amount of air that can be exhales forcefully, after normal exhale. M= 1000 F= 700
Inspiratory Reserve Volume (IRV)?
After normal inspiration the amount of air that can be forcefully inspired. M=4900, F= 4200
Residual Volume (RV)?
The air remaining in the lungs after maximum expiration. M=1200 F= 1100
What is the equation for VC?
VC=IRV + TV + ERV
What is the equation for VC?
VC=IRV + TV + ERV
Inspiration Capacity
Maximum amount of air that can be inspired after a normal expiration,
Give an equation for IC
IC = TV + IRV
Functional Residual capacity (FRC)?
Volume of air remaining in the lungs after a normal tidal expiration
Give an equation for FRC
FRC = RV + ERV
Total Lung capacity (TLC)?
Maximum amount of air contained in lungs after a maximum inspiratory effort. M=6000 F= 4200
Give an equation for TLC
TLC = TV + ERV _RV
Pulmonary Ventilation (Minute) Rate?
Amount of air moved per minute
Equation for pulmonary Ventilation rate
Tidal volume x breathing rate
Why is pulmonary ventilation different from alveolar ventilation?
Not all air inspired reached the alveoli as it goes through conducting passages
Alveolar ventilation?
The amount of air reaching the alveoli each minute.
Equation for Alveolar Ventilaiton?
Respiratory rate x (TV - anatomical dead space)
