Question

Arrange the following terms regarding process of respiration in chronological order of its decreasing volume of air
I. Expiratory reserve volume
II. Vital capacity
III. Tidal volume
IV. Residual volume

• A. $II\to IV\to I\to III$
• B. $II\to IV\to III\to I$
• C. $I\to IV\to III\to II$
• D. $IV\to I\to III\to I$

Answer 1

Answer: (A)

$II\to IV\to I\to III$

Vital capacity is the amount of air which is inhaled and exhaled by an individual. It averages about 460 mL.

Residual volume is the volume of air present in lungs even after a forcible expiration averaging about 1200 mL.

Expiratory reserve volume is the extra amount of air that can be expired forcibly after a normal expiration averaging about 1100 mL.

Tidal volume Is the volume of air inspired or expired in relaxed position. It is about 500 mL in an adult person.

Thus, the correct answer is option A.