This quiz is on the topic "Anatomy of external auditory canal. Please read up the topic from here.
First branchial cleft
Second branchial cleft
Third branchial cleft
Fourth branchial cleft
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Medial third of external auditory canal
Complete external auditory canal
Lateral third of external auditory canal
Medial half of external auditory canal
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Third week of gestation
12th week of gestation
18 weeks of gestation
28th week of gestation
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In the floor of external auditory canal
Antero inferior portion of bony external auditory canal
Roof of the external auditory canal
Posterior wall of external auditory canal
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At birth tympanic membrane and ossicles are of adult size
Tympanic membrane and squamous portion of temporal bone forms the roof of external canal
Tympanic rim is fused completely inferiorly
The shape of the external canal in a neonate is nearly straight
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5 cms
8 cms
1 cm
2.5 cms
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It is divided into outer cartilagenous and inner bony portions
Outer 2/3 is cartilagenous and inner 1/3 is bony
Outer 1/3 is cartilagenous and inner 2/3 is bony
Antero inferior wall is slightly longer than postero superior wall
Bony canal is directed antero inferiorly
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True
False
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