The quantity 1500 mL in the respiratory volumes of a normal human adult refers to (a) maximum air that can be breathed in
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Correct Option (b) residual volume
Explanation:
Residual air is the volume of air that remains in the lungs after the most forceful expiration. It equals to 1500 mL. Residual air mostly occurs in alveoli.
Maximum air that can be breathed in and breathed out is vital capacity (3500-4500 mL) while the air that can be expired over and above the tidal air by most forceful expiration is the expiratory reserve volume (1200 mL).
Explanation:
Residual air is the volume of air that remains in the lungs after the most forceful expiration. It equals to 1500 mL. Residual air mostly occurs in alveoli.
Maximum air that can be breathed in and breathed out is vital capacity (3500-4500 mL) while the air that can be expired over and above the tidal air by most forceful expiration is the expiratory reserve volume (1200 mL).
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