The Inferior wall is the floor of the middle ear. Its also known as the jugular wall and it separates the middle ear from the jugular bulb underneath.

The Superior wall of the middle ear is derived from the tegmen tympani bone and it separates the middle ear from the cranial cavity.

The Lateral wall of the middle ear mainly consists of the tympanic membrane (ear drum).

The medial wall of the middle ear is from the petrous bone and it separates the middle ear cavity from the inner ear.

Tympanic

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