The oesophagus and trachea (wind pipe) open into -

Options

A. Gullet
B. Glottis
C. Larynx
D. Pharynx

Answer

To answer the question "The oesophagus and trachea (wind pipe) open into -", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structures**: Understand that the oesophagus is the tube that carries food from the mouth to the stomach, while the trachea is the tube that carries air to and from the lungs.

2. **Locate the Mouth**: Recognize that the mouth is the anterior opening of the digestive system, where both food and air enter the body.

3. **Understand the Buccal Cavity**: The mouth leads to the buccal cavity, which is the space where food is initially processed.

4. **Trace the Path of Food**: From the buccal cavity, food moves into the pharynx. The pharynx serves as a passage for food to enter the oesophagus.

5. **Trace the Path of Air**: Air enters through the nostrils, travels to the nasal chamber, and then also moves into the pharynx.

6. **Identify the Common Pathway**: Since both the oesophagus (for food) and the trachea (for air) connect to the pharynx, we conclude that the pharynx serves as the common pathway for both food and air.

7. **Final Answer**: Therefore, the oesophagus and trachea open into the pharynx.

### Conclusion:
The correct answer is that the oesophagus and trachea open into the **pharynx**.

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