Select the incorrect match w.r.t pulmonary capacities and volumes.

Options

A. TV=IC-IRV
B. FRC=IRV+RV
C. EC=ERV+TV
D. VC=IRV+TV+ERV

Answer

To solve the question regarding the incorrect match with respect to pulmonary capacities and volumes, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Tidal Volume (TV)**:
- Tidal Volume is the amount of air that moves in and out of the lungs during a single respiratory cycle.
- It can be calculated using the formula:
\[ TV = IC - IRV \]
- Here, IC is Inspiratory Capacity and IRV is Inspiratory Reserve Volume.
- **Conclusion**: This statement is correct.

2. **Understanding Functional Residual Capacity (FRC)**:
- Functional Residual Capacity is the volume of air remaining in the lungs after a normal expiration.
- It is calculated using the formula:
\[ FRC = ERV + RV \]
- Here, ERV is Expiratory Reserve Volume and RV is Residual Volume.
- The statement in the question claims:
\[ FRC = IRV + RV \]
- This is incorrect because FRC should be equal to ERV plus RV, not IRV.
- **Conclusion**: This statement is incorrect.

3. **Understanding Expiratory Capacity**:
- Expiratory Capacity is the volume of air that can be forcibly exhaled after normal inhalation.
- It is calculated using the formula:
\[ Expiratory \, Capacity = ERV + TV \]
- The statement in the question is consistent with this definition.
- **Conclusion**: This statement is correct.

4. **Understanding Vital Capacity (VC)**:
- Vital Capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation.
- It can be calculated using the formula:
\[ VC = IRV + TV + ERV \]
- The statement in the question is consistent with this definition.
- **Conclusion**: This statement is correct.

### Final Answer:
The incorrect match with respect to pulmonary capacities and volumes is:
- **Functional Residual Capacity (FRC) = IRV + RV** (This should be **ERV + RV**).