Lab 5 - Respiration Flashcards
define dead space?
the portion of each tidal volume that doesn’t take part in gas exchange
define dynamic lung volume?
lung volume dependent on the flow rate at which air can be exhaled
define vital capasity?
the maximal volume expelled after maximal inspiration (VC=ERV+IRV+VT)
define inspiratory reserve volume?
the amount of air that can be forcibly inspired after a normal inspiration.
define expiratory reserve volume?
the amount of air that can be forcibly expired after a normal expiration
define expiration capacity?
the maximal volume expired from resting inspiratory level. (EC=VT+ERV)
define tidal volume?
the amount of air exhaled or inhaled during a respiratory cycle
define residual volume?
the amount of air remaining in lung after maximal expiration. (RV=VCx0.25)
define inspiratory capacity?
the maximal volume inspired from resting expiratory level (IC=VT+IRV)
define functional residual capacity?
the air volume that remain in the lung at resting expiratory level. (FRC=ERV+RV)
define total lung capacity?
the air volume in the lungs at the end of maximal inspiration. (TLC=VC+RV)
define minimal volume?
achieved when lung collaps. Fraction get into interstices by diffusion at first breath
what can be measured with pneumatometer?
Respiratory pressure
Tiffeneau index formula?
TI(%)=(FEV1/VC)x100
How to performe the Muller manoeuvre?
forced inspiration after normal expiration with closed glottis