In tympanic cavity there is an aperture in which stapes is fitted . It is

Options

A. Foramen rotundus
B. Foramen of magendie
C. Foramen of Monro
D. Fenestra ovalis

Answer

**Step-by-Step Solution:**

1. **Understanding the Tympanic Cavity**: The tympanic cavity, also known as the middle ear, is an air-filled space located between the outer ear and the inner ear. It contains three small bones called ossicles: malleus, incus, and stapes.

2. **Identifying the Role of Stapes**: The stapes is the smallest bone in the human body and plays a crucial role in the auditory system. It connects the middle ear to the inner ear.

3. **Recognizing the Connection**: The stapes fits into an opening in the tympanic cavity that leads to the inner ear. This opening is essential for transmitting sound vibrations from the stapes to the inner ear structures.

4. **Identifying the Correct Aperture**: The specific aperture in which the stapes is fitted is known as the "fenestra ovalis," commonly referred to as the oval window. This is the correct answer to the question.

5. **Eliminating Incorrect Options**: The other options provided (foramen rotundus, foramen of Magendie, and foramen of Monroe) are all related to the cranial cavity and the central nervous system, not the middle ear. Therefore, they can be eliminated.

6. **Conclusion**: The correct answer to the question is "fenestra ovalis," which is the aperture in the tympanic cavity where the stapes is fitted.

**Final Answer**: Fenestra ovalis.

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