Breathing and Exchange of Gases Question 4
4. Tidal volume and Expiratory reserve volume of an athlete is $500 mL$ and $1000 mL$ respectively. What will be his Expiratory capacity if the residual volume is $1200 mL$ ?
(a) $1500 mL$
(b) $1700 mL$
(c) $2200 mL$
(d) $2700 mL$
Show Answer
Answer : a
Hints & Solution
(a) Expiratory capacity is the total volume of air that a person can expire after a normal inspiration. this includes tidal volume and expirtory reserve volume (TV + ERV). Tidal volume of an athelete $=500 ml$ Expiratory reserve volume of an athelete $=1000 ml$ Expiratory capacity $=TV+ERV$ $=500+1000$ $=1500 ml$
