The Respiratory System. Basic functions of the respiratory system Breathing (Pulmonary Ventilation) – movement of air in and out of the lungs Inhalation (inspiration) draws gases into the lungs. Exhalation (expiration) forces gases out of the lungs.
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• warmed to body temperature
• cleaned of particulate matter
• Supplies body with oxygen
• Disposes of carbon dioxide
Figure 7.11a, b
Figure 21.7a, b