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Embryology and Anatomy of Ear

Question
67 out of 70
 

Not correctly matched pair is: (LQ)



A Utricle and sacule -Semiciruclar canal

B Oval window -Footplate of staps

C Aditus ad antrum -MacEwen's triangle

D Scala vestibule -Reissner's membrane

Ans. C Aditus ad antrum - Mac Ewen's triangle

Let's analyze each option separately.

Option a:

Utricle and saccule - Semicircular canal

Utricle lies bony vestibule and receives the five openings of the three semicircular ducts/semicircular canals Saccule also lies in the bony vestibule, anterior to the utricle and together both of there are called otolith organs.

Hence, this pair is correct

Option b:

Oval window - footplate of stapes

Oval window is closed by the footplate of stapes.

Hence this pair is also related to each other

Option c:

Aditus ad antrum - MacEwen's triangle

Aditus ad antrum is an opening through which the attic communicates with the antrum.

Mastoid antrum and not the aditus is marked externally on by MacEwen's triangle

Hence, this pair is not correctly matched.

Option d:

Scala vestibule - Reissner's membrane

Reissner's membrane separates scala vestibule from scala media

Hence, this pair is also related to each other.

Embryology and Anatomy of Ear Flashcard List

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