Question

Fenestra ovalis in frog is the

• A. Air-filled cavity of middle ear
• B. Communication between pharynx and tympanic cavity
• C. External opening of tympanic cavity covered by tympanic membrane
• D. Opening of auditory capsule which separates middle ear from internal ear

Answer 1

The correct option is D Opening of auditory capsule which separates middle ear from internal ear

The bony partition between the cavity of middle ear and the internal ear is perforated by a small window like aperture called the fenestra ovalis.

The air filled cavity in the middle ear is called the tympanic cavity. The communication between the pharynx and tympanic cavity is by the presence of the eustachian tube. The external auditory meatus is the external opening if the tympanic cavity covered by the tympanic membrane.

So, the correct option is D.