Question

If the vital capacity (VC) of an individual is 4900 ml, the tidal volume (TV) is 500 ml, and the inspiratory reserve volume (IRV) is 3300 ml, the expiratory reserve volume (ERV) of the individual is ________ ml (in integer).

Hint:

The vital capacity is the sum of the tidal volume, inspiratory reserve volume, and expiratory reserve volume.

Answer 1

Correct Answer: 1100

We are given the following values:
- Vital Capacity (VC) = 4900 ml,
- Tidal Volume (TV) = 500 ml,
- Inspiratory Reserve Volume (IRV) = 3300 ml.
The formula for Vital Capacity (VC) is: \[ VC = TV + IRV + ERV \] Substituting the given values: \[ 4900 = 500 + 3300 + ERV \] \[ ERV = 4900 - 3800 = 1100 \, \text{ml}. \] Thus, the expiratory reserve volume (ERV) is 1100 ml.