What is the average value of inspiratory reserve volume in a healthy adult?
1-1.5 liters
2.5-3 liters
4-4.5 liters
5-5.5 liters
Inspiratory reserve volume is the additional volume of air a person can inspire by a forcible inspiration. In a healthy adult, this volume averages between 2.5-3 liters.
Option 2 is the correct answer.