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 $=TV+ERV$
$=500+1000$
$=1500 ml$



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