Ear, middle means: Middle ear: This is the part of the ear consisting of the eardrum membrane tympanic and the cavity tympanum. The Eustachian tube connects this cavity to the pharynx. A chain of three small bones is found in the middle ear cavity. These are the ossicles, malleus and incus. They connect the inner ear to the eardrum. The middle ear connects with the Pharynx and equilibrates under external pressure. It also transmits the vibrations of the eardrum to the inner ear.
(in Medical Dictionary)