Nurturing Life Sciences
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#Unit 7. System Physiology – Animal
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Volumes and capacities of the lung are measured with a spirometer.
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A spirogram indicating changes in lung volume under different conditions of breathing.
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There are four pulmonary lung volumes:
1. Tidal volume2. Inspiratory reserve volume3. Expiratory reserve volume4. Residual volume
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Tidal volume (TV)The volume of air inspired or expired with each normal breath