Inflammation of the tympanic cavity (purulent otitis media) was complicated by inflammation of mammillary process sockets. What wall of tympanic cavity did the pus penetrate into the sockets through?

Answer options

1. Posterior
2. Medial
3. Anterior
4. Lateral
5. Superior

Explanation

The tympanic cavity is a small cavity surrounding the bones of the middle ear. Within it sit the ossicles, three small bones that transmit vibrations used in the detection of sound. The tympanic cavity is bounded by: 1. The medial wall (or labyrinthic wall) - facing the inner ear- has the oval window and round window, the promontory, and the prominence of the facial canal. 2. The lateral wall (or membranous wall)- facing the outer ear- is formed mainly by the tympanic membrane. 3. The roof of the cavity (tegmental wall) is formed by the tegmen tympani. 4. The floor of the cavity (the jugular wall) consists of the fundus tympani. 5. The posterior wall (or mastoid wall) is formed by the entrance to the tympanic antrum, the pyramidal eminence, and the fossa includes. 6. The anterior wall (or carotid wall) corresponds with the carotid canal.