A) inspiratory reserve volume
B) expiratory reserve volume
C) residual volume
D) tidal volume
Correct Answer: C
Solution :
Lung volumes, are the amount of exchangeable air between lungs and atmosphere during normal and forceful inspiration and expiration. Tidal volume (TV) : It is volume of air inspired or expired during a normal respiration, approximately 500 mL. Inspiratory Reserve Volume (IRV) : It is the additional volume of air a person can inspire by a forceful inspiration, over aging about 3000 mL (complemental air). Expiratory Reserve Volume (ERV) : It is the additional volume of air, a person can expire by a forcible expiration, overaging about 1000 mL (supplemental air). Residual Volume (RV) : It is the volume of air present in lungs even after a forcible expiration, over aging about 1000 ml.
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