Boundaries Of Attic In Middle Ear

Boundaries of the middle ear homologous to structure of a cube roof.

Boundaries of attic in middle ear.

The middle ear space read more. Tympanums tympana is an air filled chamber in the petrous part of the temporal bone. The eardrum acts as a natural boundary between the middle ear and the ear canal. A slight constriction divides it into an upper and a lower chamber the tympanum tympanic cavity proper below and the epitympanum above.

It is separated from the external ear by the tympanic membrane and from the inner ear by the medial wall of the tympanic cavity. Infection in the middle ear may spread superiorly and lead to formation of abscess in the meninges especially extradural abscess meningitis or if severe it may even lead. The middle ear and attic are inspected to evaluate the pattern of disease and ossicular chain involvement. Step 3 initial dissection commences by curetting the outer attic wall and following the cholesteatoma sac to its lateral extent akin to a front to back mastoidectomy atticoantrostomy.

These chambers are also referred to as the atrium and the attic respectively. The cavity of the middle ear is a narrow air filled space. Boundaries of middle ear middle ear has six boundaries. The middle ear or middle ear cavity also known as tympanic cavity or tympanum plural.

Pressure in the middle ear is maintained through the eustachian tubes which are closed when not in use. Roof floor and medial lateral anterior and posterior walls. It contains the three auditory ossicles whose purpose is to transmit sound vibrations from. Presence of more goblet cells near the orifice of e.