(D) The $fenestra$ $ovalis$ (also known as the oval window) is an opening in the auditory capsule of the frog's skull. It serves as the connection poi

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Opening in the auditory capsule which separates the middle ear from internal ear

(D) The $fenestra$ $ovalis$ (also known as the oval window) is an opening in the auditory capsule of the frog's skull. It serves as the connection point that separates the middle ear cavity from the internal ear. In the frog,the tympanic cavity is connected to the internal ear via two openings: the $fenestra$ $ovalis$ and the $fenestra$ $rotunda$.

Class 11 Biology Structural Organisation In Animals Anatomy of frog

Medium

In frog,$fenestra$ $ovalis$ is the

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