WorksheetsEAR - EMBRYOLOGY & ANATOMY
Total questions: 15
Worksheet time: 5mins
1. Pinna develops from
1st pharyngeal arch
1st and 2nd pharyngeal arch
2nd pharyngeal arch
1st and 3rd pharyngeal arch
True regarding, the marked is:
Improper fusion of auricular tubercles
Persistent opening of first branchial arch
Autosomal recessive pattern
First cleft anomaly
Eustachian tube develops from:
1st and 2nd pharyngeal pouch
1st pharyngeal pouch
2nd pharyngeal pouch
3rd pharyngeal pouch
Organ of Corti is situated in
scala media
s.tympani
s,vestibuli
saccule
Endolymphatic duct connects which structure
Scala media to subdural space
Scala vestibule to aqueduct of cochlea
Scala tympani to subdural space
Utriculo saccular duct to endolymphatic sac
The effective vibratory area of the tympanic membrane
25 mm2
30 mm2
40 mm2
55 mm2
Fluid, which has high potassium and low sodium content, is:
CSF
perilymph
Endolymph
Pleural fluid
Foetus starts hearing by what time in intrauterine life
14 weeks
20weeks
32 weeks
38 weeks
Site of Darwin’s tubercle is:
Postero-lateral part of helix
Tragus
Incisura terminalis
Lobule
The most mobile part of the tympanic membrane:
Central
Peripheral
Both
None of the above
Stria vascularis is present in:
Cochlea
Saccule
Utricle
Semi-circular canals
Otoconia is seen in:
Utricle
Superior semicircular canal
Lateral semicircular canal
Cochlea
Type of joint between malleus and incus is:
Saddle
Ball and socket
Hinge
Pivot
Complete absence of bony and membranous labyrinth:
Mondini aplasia
Michel aplasia
Cochleo-saccular aplasia
Alexander aplasia
Most common congenital middle ear abnormality
a. Absent footplate of stapes b.
Fixation of footplate of stapes
Oval window abnormality
Absent long process of incus
