Volume of air remaining in lung after normal expiration:: (A) Functional residual capacity, (B) Residual volume, (C) Vital capacity, (D) Both 1and 2
Answer is A. Functionality residual capacity: amount of air remaining in the lung after normal expiration. Residual volume: amount of air remaining in the lung after forced expiration. Ref : G K Pal textbook of Practical physiology 4th edition, page number: 159