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The Lungs

The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

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Page 1: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

The Lungs

Page 2: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

Gas exchange

tissue

CO2 O2

Page 3: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

Lung compartments

air compartment

vascular compartment

Page 4: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

The airway

tracheabronchusbronchiolealveoli

Page 5: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

Bronchus

Page 6: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

Proximal bronchus

PV

Page 7: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

The distal airway

single alveoli

Page 8: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

terminal bronchiole

alveolar duct alveolus

The distal airway

Page 9: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

Lung airflow zones

Rigid (150 ml) ai

rway

alveolielastic (7000 ml)

Page 10: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

Poisseuille: F = (Pout – Palv)/R

airw

ay

alveoli

0

<0

airflow

Pout

Palv

Page 11: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

air

Balloon-in-box model of lung

lungchest wall

pleural space

diaphragm

Page 12: The Lungs. Gas exchange tissue CO 2 O2O2 Lung compartments air compartment vascular compartment

Breathing

expiration inspiration

air

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