The entry of food into the larynx is prevented by :

Options

A. A cartilaginous flap
B. The glottis
C. The pharynx
D. The foodpipe

Answer

To solve the question regarding what prevents the entry of food into the larynx, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structures Involved**:
- The larynx is an important part of the respiratory system and is involved in sound production. It has an opening known as the glottis.
- The epiglottis is a flap-like structure that is crucial in preventing food from entering the larynx.

2. **Identifying the Options**:
- The options provided are:
1. Cartilaginous flap
2. Glottis
3. Pharynx
4. Food pipe (esophagus)

3. **Analyzing Each Option**:
- **Cartilaginous Flap**: This refers to the epiglottis, which covers the larynx during swallowing to prevent food from entering.
- **Glottis**: This is the opening of the larynx itself, not a structure that prevents food entry.
- **Pharynx**: This is a passageway for food to enter the esophagus, not a structure that prevents food from entering the larynx.
- **Food Pipe (Esophagus)**: This is the tube that carries food to the stomach, and it does not prevent food from entering the larynx.

4. **Conclusion**:
- The only structure that specifically prevents food from entering the larynx is the **epiglottis**, which is a cartilaginous flap.

### Final Answer:
The entry of food into the larynx is prevented by the **cartilaginous flap called the epiglottis**.

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