MCQ
Volume of air remains in the lungs after normal expiration is
  • $ERV + RV$
  • B
    $IRV + RV$
  • C
    $RV + IRV + ERV$
  • D
    $TV$

Answer

Correct option: A.
$ERV + RV$
a
Volume of air remains in the lungs after normal expiration is known as functional residual capacity $(FRC)$.
$FRC = ERV + RV = 2500 \;ml$

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