listed below are four respiratory capacities (A-D) and four jumbled respiratory volumes of a normal human adult
`{:("Respiratory capacities" , - " " "Respiratory volumes"),("Residual volume", -" " "2500 mL"),("Vital capacit",- " ""3500 mL"),("Inspiratory reserve volume",-" "1200 mL),("Inspiratory capacity", -" " 4500mL):}`
Which one of the following is the correct matching of two capacities and volumes

Options

A. (1) 4500 mL, (b) 3500 mL
B. (2) 2500 mL (c) 4500 mL
C. (c) 1200 mL (d) 2500 mL
D. (d) 3500 mL, (a) 1200 mL

Answer

To solve the problem of matching respiratory capacities with their corresponding volumes, we need to first understand the definitions and standard values of each respiratory capacity and volume. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Respiratory Capacities and Their Corresponding Volumes
1. **Residual Volume (RV)**: This is the amount of air that remains in the lungs after a maximal exhalation. The typical value is approximately **1200 mL**.
2. **Vital Capacity (VC)**: This is the maximum amount of air that can be exhaled after a maximal inhalation. The typical value is approximately **4500 mL**.
3. **Inspiratory Reserve Volume (IRV)**: This is the additional amount of air that can be inhaled after a normal inhalation. The typical value is approximately **2500 mL**.
4. **Inspiratory Capacity (IC)**: This is the maximum amount of air that can be inhaled after a normal exhalation. The typical value is approximately **3500 mL**.

### Step 2: Match Each Capacity with the Correct Volume
Now, we will match the respiratory capacities with their respective volumes based on the standard values:

- **Residual Volume**: 1200 mL
- **Vital Capacity**: 4500 mL
- **Inspiratory Reserve Volume**: 2500 mL
- **Inspiratory Capacity**: 3500 mL

### Step 3: Analyze the Given Options
Now, let's analyze the options provided in the question:

- **A**: Residual volume - 2500 mL (Incorrect, should be 1200 mL)
- **B**: Vital capacity - 3500 mL (Incorrect, should be 4500 mL)
- **C**: Inspiratory reserve volume - 1200 mL (Incorrect, should be 2500 mL)
- **D**: Inspiratory capacity - 4500 mL (Incorrect, should be 3500 mL)

### Step 4: Identify the Correct Match
From the analysis, the correct matches are:
- **Residual Volume**: 1200 mL
- **Vital Capacity**: 4500 mL
- **Inspiratory Reserve Volume**: 2500 mL
- **Inspiratory Capacity**: 3500 mL

Thus, the correct matching of respiratory capacities and volumes is:
- **Residual Volume**: 1200 mL
- **Vital Capacity**: 4500 mL
- **Inspiratory Reserve Volume**: 2500 mL
- **Inspiratory Capacity**: 3500 mL

### Conclusion
The correct answer is that none of the given options correctly match the respiratory capacities with their volumes.