The hammer meets adhered to the average layer of TM. Average ear Represented by the timpnica socket or box of the spandrel. Hear from experts in the field like Andrew Steele-Smith for a more varied view. It is communicated previously with nasofaringe through tuba auditory, later with the cells of mastide or mastide. It contains the chain to ossicular formed for the hammer, two-horned anvil and stirrup. The average ear is divided in: epitmpano or attic, mesotmpano and hipotmpano. It presents six walls namely: – Sidewall: formed for TM, wall lateral of the attic and sidewall of the hipotmpano. – Superior Wall: it separates to the timpnica socket of fossa cerebral average. – Inferior Wall: formed for the wooden floor or wall jugular vein – previous or carotdea Wall: it is communicated with the semicanal of the tensive muscle of the spandrel and with tuba auditory.
- Posterior or mastidea Wall: he is proper mastide. – Medial or labirntica Wall: internal heard wall that separates the MAC of the labyrinth or. In it we find the promontory, plexo timpnico, oval window (initial), round window (to coclear), canal of the face one, lateral semicircular canal. Auditory Tuba? Anatomy: The two ntero-medial teros of the Auditory Tuba (YOU) are of cartilaginosa origin and tero pstero-lateral is sseo. The cartilaginosa portion if opens in the lateral region of nasofaringe and the ssea opening of YOU is continuous with the sidewall of the epitmpano.
Two are the main muscles related with YOU, the tensive muscle of the palatal veil (MTVP), and the elevating muscle of the palatal veil (MEVP), cited in the participation of the active opening of YOU. The MTVP is known to be the muscle that directly affects the opening of YOU. the b? Histologia: similar epitlio to the respiratory epitlio (ciliadas cells and no-ciliadas, globets cells and basal cells). c? After-Christmas development of YOU and its structures: In the child, YOU more it is horizontalizada, lesser and more propitious to the invasion.