identify and discuss the four pulmonary volume
The four main pulmonary or lung volume are :
1. Tidal volume : it is amount of air that a person can inhale or exhale during a normal breathing. Normal value is 500ml
2. inspiratory reserve volume : it is the amount of air forcefully inhaled by a person after normal inspiration. normal value :1900-3300ml
3. expiratory reserve volume : it is the amount of air forcefully exhaled by a person after a normal expiration. Normal value : 700-1200ml
4. Residual volume : It is the amount of volume of air that remains within thd lungs after maximal expiration. 1200ml
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