Ear - EA R 1. Two functions of ear? Equilibrium (internal...

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EAR 1. Two functions of ear? Equilibrium (internal ear), hearing (external and middle ear) 2. Composed of shell like auricle (pinna) which collects sound, external auditory meatus (canal) which conducts sound to tympanic membrane? External ear 3. The lobule (lobe) is non cartilaginous, consists of fibrous tissue, fat and blood vessels? Auricle 4. Nerve supply to skin of auricle? Great auricular nerve (ventral rami C2 C3), auriculotemporal nerve (branch mandibular) 5. Cartilaginous part contains ceruminous and sebaceous glands in subcutaneous tissue? External acoustic meatus 6. Peak of concavity of membrane is umbo, handle of malleus attaches to inner surface of membrane,,, superior thin part of membrane called pars flaccid, remaining part of membrane called pars tensa? Tympanic membrane 7. Nerve supply tympanic membrane? Auriculotemporal, auricular branch of vagus, glossopharyngeal 8. Tympanic cavity is connected anteromedially with nasopharynx by? Audiotry (pharyngotympanic) tube 9. Tympanic cavity connected posterosuperiorly with mastoid cells through? Mastoid antrum 10. Formed by thing plate of bone, tegmen tympani? Tegmental wall (roof) 11. Formed by jugular fossa? Jugular wall (floor) 12. Formed by tympanic membrane, hanld of malleus attached to tympanic membrane? Membranous wall (lateral wall) 13. Has the promontory, the initial part of (base turn) of cochlea? Labryrinthine wall (medial wall) 14.
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This note was uploaded on 11/22/2011 for the course ANAT 2626 taught by Professor Ronaldg.mayne during the Winter '11 term at Life Chiropractic College West.

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Ear - EA R 1. Two functions of ear? Equilibrium (internal...

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