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EncyclopediaSeemuscletensor tympani muscle
ten·sor tym·pa·ni mus·cle (ten'sōr tim'pă-nī mŭs'ĕl) Origin, the cartilaginous part of the auditory (eustachian) tube and the walls of its hemicanal just above the bony portion of the auditory tube; insertion, handle of malleus; action, draws the handle of the malleus medialward, tensing the tympanic membrane to protect it from excessive vibration by loud sounds; nerve supply, branches of trigeminal through the otic ganglion.
Synonym(s): musculus tensor tympani [TA] , tensor muscle of tympanic membrane. tensor tympani muscleMiddle ear muscle. Origin: wall of auditory tube. Insertion: handle of malleus. Nerve: trigeminal (CN V). Action: tenses tympanic membrane, dampens excessive vibrations. See also: muscleToynbee, Joseph, English otologist, 1815-1866. Toynbee corpuscles - connective tissue cells found between the laminae of fibrous tissue in the cornea. Synonym(s): corneal corpusclesToynbee manuever - swallowing or blowing while nose is pinched closed and the mouth is shut opens the ears.Toynbee muscle - draws the handle of the malleus medialward, tensing the tympanic membrane to protect it from excessive vibration by loud sounds. Synonym(s): tensor tympani muscleToynbee tube - a tube by which an otologist can listen to the sounds in a patient's ear during politzerization. |