Ear, middle

There are three sections of the ear. They are the external ear, the middle ear, and the inner ear. The middle ear consists of the ear drum (the tympanum or tympanic membrane) and, beyond it, a cavity. This cavity is connected via a canal (the Eustachian tube) to the pharynx (the nasopharynx). The Eustachian tube permits the gas pressure in the middle ear cavity to adjust to external air pressure (so, as you're descending in a plane, it's the Eustachian tube that opens when your ears "open").) The middle ear cavity also contains a chain of 3 little bones (ossicles) that connect the ear drum to the internal ear. The ossicles are named (not the Nina, the Pinta and the Santa Maria but) the malleus, incus, and stapes. In terms of function, the middle ear communicates with the pharynx, equilibrates with external pressure and transmits the ear drum vibrations to the inner ear.

Medical dictionary. 2011.

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  • Middle ear — Malleus Tensor Tympani Incus Stapedius …   Wikipedia

  • Middle ear — There are three sections of the ear. They are the external ear, the middle ear, and the inner ear. The middle ear consists of the ear drum (the tympanum or tympanic membrane) and, beyond it, a cavity. This cavity is connected via a canal (the… …   Medical dictionary

  • middle ear — noun the main cavity of the ear; between the eardrum and the inner ear • Syn: ↑tympanic cavity, ↑tympanum • Hypernyms: ↑cavity, ↑bodily cavity, ↑cavum • Part Holonyms: ↑audi …   Useful english dictionary

  • ear — I. /ɪə / (say ear) noun 1. the organ of hearing, in humans and other mammals usually consisting of three parts (external ear, middle ear, and inner ear). 2. the external part alone. 3. the sense of hearing. 4. keen perception of the differences… …   Australian English dictionary

  • ear — I (New American Roget s College Thesaurus) n. head, spike; auricle, concha; handle, knob; heed, observance. See attention, hearing. II (Roget s IV) n. 1. [The organ of hearing] Syn. outer ear, middle ear, inner ear, auricle, eardrum, labyrinth,… …   English dictionary for students

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  • ear — n 1. hearing organ, auditory apparatus, Fr. oreille; internal ear, middle ear, external ear. 2. hearing, sense of hearing, audition. 3. attention, heed, observance, observation, notice, note, regard; heedfulness, attentiveness, concentration,… …   A Note on the Style of the synonym finder

  • Ear clearing — or clearing the ears is any of various maneuvers to equalize the pressure in the middle ear with the outside pressure, by letting air enter along the Eustachian tubes, as this does not always happen automatically when the pressure in the middle… …   Wikipedia

  • Ear — Ear, n. [AS. e[ a]re; akin to OFries. [ a]re, [ a]r, OS. ?ra, D. oor, OHG. ?ra, G. ohr, Icel. eyra, Sw. [ o]ra, Dan. [ o]re, Goth. auso, L. auris, Lith. ausis, Russ. ukho, Gr. ?; cf. L. audire to hear, Gr. ?, Skr. av to favor, protect. Cf.… …   The Collaborative International Dictionary of English

  • Ear finger — Ear Ear, n. [AS. e[ a]re; akin to OFries. [ a]re, [ a]r, OS. ?ra, D. oor, OHG. ?ra, G. ohr, Icel. eyra, Sw. [ o]ra, Dan. [ o]re, Goth. auso, L. auris, Lith. ausis, Russ. ukho, Gr. ?; cf. L. audire to hear, Gr. ?, Skr. av to favor, protect. Cf.… …   The Collaborative International Dictionary of English

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