Intercostal muscles are found attached with

Options

A. Diaphragm
B. Ribs
C. Pleura
D. Lungs

Answer

### Step-by-Step Solution:

1. **Understanding Intercostal Muscles**:
- Intercostal muscles are a group of muscles located between the ribs. They play a crucial role in the mechanics of breathing.

2. **Identifying Attachments**:
- The intercostal muscles are specifically attached to the ribs. They help in expanding and contracting the rib cage during breathing.

3. **Function of Intercostal Muscles**:
- During inhalation, the intercostal muscles contract, lifting the ribs and expanding the chest cavity, which allows the lungs to fill with air. During exhalation, these muscles relax, and the rib cage returns to its original position, aiding in expelling air from the lungs.

4. **Analyzing the Options**:
- **Diaphragm**: This is a separate muscle that aids in breathing but is not attached to the intercostal muscles.
- **Ribs**: This is the correct answer, as intercostal muscles are attached to the ribs.
- **Pleura**: This is a membrane surrounding the lungs and is not a muscle.
- **Lungs**: The lungs are not directly attached to the intercostal muscles; they are influenced by the movements of the rib cage.

5. **Conclusion**:
- Based on the analysis, the intercostal muscles are found attached to the **ribs**.

### Final Answer:
Intercostal muscles are found attached with **ribs**.

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