BIOC33H3 Lecture Notes - Red Blood Cell, Hypocapnia, Partial Pressure
Document Summary
Pulmonary function tests: used to diagnose lung diseases, alveolar ventilation - calculating amount of air going into alveoli. Lung function tests - spirometry: done with electronic machines, standard spirometer used to be a drum in water and person breathes in and out. Drum connected to a pen which makes recordings. Lung volumes: can sum these lung volumes into lung capacities -give an indication of how well lung is functioning, tidal volume (vt) Amount of air on breath by breath basis. On average, vt is 500ml per breath - average is 12 breaths per minute: if taking a maximal inspiration, amount of air breathed in above and beyond vt that can maximally be taken in. Inspiratory reserve volume (irv: amount of air that can be expired following normal vt is referred to as. Expiratory reserve volume (erv: exhaling as much as possible, there is still air in lungs. Residual volume (rv: can add these volumes to create different lung capacities.
