(n.) The tympanum.

Eustachian tube allantoic membrane amnion amniotic sac anvil arachnoid membrane auditory apparatus auditory canal auditory meatus auditory nerve auditory ossicles auditory tube auricle basement membrane basilar membrane bony labyrinth cauliflower ear cochlea conch concha conjuctiva drumhead ear ear lobe endolymph external ear hammer hymen incus inner ear lobe lobule lug maidenhead malleus mastoid process membrana serosa membrana tympana membrane meninges meninx middle ear neurilemma organ of Corti outer ear oval window pellicle pericardium perilymph perineurium pinna pleura round window secondary eardrum semicircular canals serosa shell stapes stirrup tympanic cavity tympanic membrane tympanum velum vestibule