BIOL 121 Lecture 26: Biol 121 - LTR 26
Document Summary
Tidal volume: difference between volume after a normal inhalation and a normal exhalation. Inspiratory reserve volume: volume you can inhale highest amount in reserve. Expiratory reserve volume: amount of volume that can be exhaled after a normal exhalation. Residual volume: volume left after maximal exhalation. Vital capacity: amount of air you can move in and out irv + erv + tidal volume. Inspiratory capacity: the volume of air that can be inspired after a normal expiration; it is the sum of the tidal volume and the inspiratory reserve volume. Forced vital capacity: volume of air that can be forced out within a time limit. Forced expiratory volume (in one second) (fev-1): how much air we can force in/out per second. Obstructive conditions in pulmonary function testing (fvc and fev-1) Obstructive: fvc is the same but fev-1 decreases, less air out in the same amount of time, fev/fvc= < 80% Restrictive conditions in pulmonary function testing (fvc and fev-1)
