Floor Of Middle Ear Cavity

The space is called the tympanic cavity and it has two parts.

Floor of middle ear cavity.

The tympanic cavity is bounded by. The floor inferior wall is also a thin bony plate in this case separating the middle ear cavity from the jugular vein and the carotid artery below. It enters the middle ear via a canaliculus in the floor of the tympanic cavity and takes part in the formation of tympanic plexus. The middle ear or middle ear cavity also known as tympanic cavity or tympanum plural.

It is separated from the external ear by the tympanic membrane and from the inner ear by the medial wall of the tympanic cavity. The middle ear takes up the space behind the tympanic membrane inside the temporal bone. Tympanic branch of glossopharyngeal nerve. On its lateral surface it abuts the external auditory meatus ear canal from which it is separated by the tympanic membrane eardrum.

The tympanic cavity proper directly behind the membrane and the epitympanic recess which is located just above the membrane. Tympanums tympana is an air filled chamber in the petrous part of the temporal bone. The hollow space of the middle ear is also known as the tympanic cavity and is surrounded by the tympanic part of the temporal bone. The auditory tube also known as the eustachian tube or the pharyngotympanic tube joins the tympanic cavity with the nasal cavity nasopharynx allowing pressure to equalize between the middle ear and throat.

It gives sensory supply to the liner of middle ear antrum and auditory tube.