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The Lungs
Gas exchange
tissue
CO2 O2
Lung compartments
air compartment
vascular compartment
The airway
tracheabronchusbronchiolealveoli
Bronchus
Proximal bronchus
PV
The distal airway
single alveoli
terminal bronchiole
alveolar duct alveolus
The distal airway
Lung airflow zones
Rigid (150 ml) ai
rway
alveolielastic (7000 ml)
Poisseuille: F = (Pout – Palv)/R
airw
ay
alveoli
0
<0
airflow
Pout
Palv
air
Balloon-in-box model of lung
lungchest wall
pleural space
diaphragm
Breathing
expiration inspiration
air
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