Ear

The ear is divided into the external ear, middle ear, and inner ear. 

The external ear runs from the auricle to the tympanic membrane. The main condition that affects the external ear is otitis externa, an infection of the external ear (typically the external auditory canal) that is treated usually with topical antimicrobial regimes.

The middle ear lies within the temporal bone, extending from the tympanic membrane to the lateral wall of the inner ear, and its main function is to transmit vibrations from the tympanic membrane to the inner ear via the auditory ossicles. Both acute and chronic infections of the middle ear can occur (otitis media), especially in children

The inner ear is located within the petrous part of the temporal bone, lying between the middle ear and the internal acoustic meatus.