Question

Consider the following statements each with two blanks.
(i) Actually, only about ___(1)___ml of air enters the lung alveoli for the exchange of gases.The remaining fills the respiratory passage and is termed ___(2)___.
(ii) The amount of air which one can inhale with maximum effort and also exhale with maximum effort is termed as ___(3)___ . It is about ___(4)___ in normal adult person.
(iii) During normal quiet breathing, on an average, approximately _(5)_ ml of air is inspired or expired by adult human male in each breath. It is termed as __(6)__ volume.
Which of the following options gives the correct fill ups for the respective blank numbers from (1) to (6) in the above statements?

• A. (3)-vital capacity, (4)-4000 mL, (5)-500, (6)-tidal
• B. (1)-100, (2)-residual volume, (3)-functional residual capacity, (4)-3000mL
• C. (1)-350,(2)-dead space air, (5)-1000,(6)-inspiratory reserve
• D. (1)-350, (2)-residual volume, (3)-vital capacity, (4)-4000 mL

Answer 1

The correct option is A (3)-vital capacity, (4)-4000 mL, (5)-500, (6)-tidal

Actually, only about 350 mL of air (out of total 500 mL tidal volume) enters the lung alveoli for the exchange of gases. The remaining 150 mL fills the respiratory passage and is termed as dead air space because no exchange of gases takes place here.