NEET 2019 · BiologyPrevious Year Question
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?
Answer: (A) 1500 mL. Answer: (a) 1500 mL Solution: Expiratory Capacity (EC) is the total volume a person can expire after a normal inspiration and equals Tidal Volume + Expiratory Reserve Volume (TV+ERV).
- A.1500 mL✓
- B.1700 mL
- C.2200 mL
- D.2700 mL
Correct Answer
(A) 1500 mL
Solution & Explanation
Answer: (a) 1500 mL Solution: Expiratory Capacity (EC) is the total volume a person can expire after a normal inspiration and equals Tidal Volume + Expiratory Reserve Volume (TV+ERV). Here EC = 500 + 1000 = 1500 mL. Residual Volume is not part of expiratory capacity, so 1200 mL is a distractor. NCERT: Ch 14, p.187, line 11 — "Expiratory Capacity (EC)... This includes tidal volume and expiratory reserve volume (TV+ERV)"
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