The tympanic membrane is stretched over a cartilagenous ring. It is
A
Columella
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B
Fenestra ovalis
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C
Tympanicus annulus
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D
None of the above
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Solution
The correct option is C Tympanicus annulus
Tympanic membrane is a thin and transparent membrane. It is called ear drum and separates outer ear from the middle ear. It is stretched obliquely over a cartilaginous ring called tympanicus annulus. It is present in the form of an incomplete ring of bone. It is formed as a thickened peripheral rim of main portion of tympanic membrane known as pars tensa.