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Head and Neck Anatomy and Embryology > Ear > Flashcards

Ear Flashcards

1
Q

Major divisions of the ear?

A

External
Middle
Internal

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2
Q

Epithelium of lateral 1/3 of external ear canal?

A

Stratified squamous keratinised epithelium with ceruminous and sebaceous glands

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3
Q

Ear ossicles?

A

Malleus
Incus
Stapes

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4
Q

Ear ossicles are found in which division of the ear?

A

Middle

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5
Q

Found between external and middle ear?

A

Tympanic membrane

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6
Q

Parts of pinna?

A 
Tragus 
Meatus 
Helix 
Antihelix 
Concha
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7
Q

Wax is produced by?

A

Ceruminous and sebaceous glands

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8
Q

Epithelium of inner layer of tympanic membrane?

A

Pseudostratified ciliated columnar epithelium with goblet cells

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9
Q

Number of layers in tympanic membrane?

A

Three

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10
Q

Epithelium of outer layer of tympanic membrane?

A

Stratified squamous keratinising epithelium

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11
Q

Function of ossicles?

A

Conduct sound from tympanic membrane to inner ear

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12
Q

Functional divisions of external ear?

A

Pinna

External auditory meatus

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13
Q

Structure attaching tympanic membrane to surrounding temporal bone?

A

Fibrocartilaginous ring

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14
Q

Handle of the malleus attaches to the tympanic membrane at?

A

The umbo

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15
Q

Vessel supplying external ear?

A

External carotid artery

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16
Q

Bone housing middle ear?

A

Temporal bone

17
Q

Ossicle resembling hammer?

A

Malleus

18
Q

Ossicle resembling stirrup?

A

Stapes

19
Q

Ossicle resembling anvil?

A

Incus

20
Q

Part of malleus attaching to tympanic membrane?

A

Handle of malleus

21
Q

Structures connected by stapes?

A

Oval window of inner ear

Incus

22
Q

Spaces connected by eustachian canal?

A

Middle ear

Nasopharynx

23
Q

Function of eustachian canal?

A

Equalisation of pressure in middle ear with external auditory meatus

24
Q

Part of temporal bone housing inner ear?

A

Petrous part

25
Q

Two main components of inner ear?

A

Bony labyrinth

Mechanical labyrinth

Head and Neck Anatomy and Embryology (5 decks)

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