Question

The tympanic membrane is stretched over a cartilagenous ring. It is

• A. Columella
• B. Fenestra ovalis
• C. Tympanicus annulus
• D. None of the above

Answer 1

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.

So, the correct answer is 'Tympanicus annulus'.