The tympanic cavity is connected with the pharynx by

Options

A. Glottia
B. Gullet
C. Eustachian tubes
D. Internal nares.

Answer

To solve the question "The tympanic cavity is connected with the pharynx by," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Components**:
- The tympanic cavity is a part of the middle ear. It plays a crucial role in hearing by transmitting sound vibrations from the outer ear to the inner ear.

2. **Identify the Connection**:
- The question asks how the tympanic cavity connects to the pharynx. The pharynx is a part of the throat that is involved in both the respiratory and digestive systems.

3. **Evaluate the Options**:
- **Glottis**: This is the opening between the vocal cords in the larynx, not related to the tympanic cavity.
- **Gullet**: This refers to the esophagus, which is involved in transporting food from the mouth to the stomach, and does not connect to the tympanic cavity.
- **Eustachian Tube**: This is a canal that connects the middle ear (where the tympanic cavity is located) to the pharynx. It helps equalize pressure in the ear.
- **Internal Naris**: These are the internal nostrils, which are not related to the tympanic cavity.

4. **Select the Correct Answer**:
- The correct answer is the **Eustachian tube**, as it is the structure that connects the tympanic cavity to the pharynx.

5. **Conclusion**:
- Therefore, the tympanic cavity is connected with the pharynx by the Eustachian tube.

### Final Answer:
The tympanic cavity is connected with the pharynx by the **Eustachian tube**.

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