THRC.18 Flashcards

1
Q

Components of the external ear

A
  • Auricle
  • External acoustic meatus
  • Tympanic membrane
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2
Q
A

External acoustic meatus

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3
Q
A

Auricular cartilage

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4
Q
A

Annular cartilage

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5
Q
A

Tympanic membrane

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6
Q
A

Tympanic ring of temporal bone

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7
Q
A

Cavum tympani (In middle ear)

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8
Q
A

Auditory ossicles

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9
Q
A

Apex

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10
Q
A

Border of the helix

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11
Q
A

Scapha

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12
Q
A

Anthelix

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13
Q
A

Antitragus

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14
Q
A

Intertragic incisure

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15
Q
A

Semiannular cartilage

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16
Q
A

Annular cartilage

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17
Q
A

Tragi (long hairs)

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18
Q
A

Auricula

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19
Q
A

Anthelix

20
Q
A

Tragus

21
Q
A

Antitragus

22
Q
A

Annular cartilage

23
Q

Which nerve innervates the muscles used for ear movement?

A

Intermediofacial nerve

24
Q
A

Concha

25
Q

The composition of the external acoustic meatus

A
  • Cartilagenous part (Distal)
  • Osseus part (Proximal)
26
Q

Earwax is produced by…

A

Sebaceous glands in the external acoustic meatus

27
Q

Tympanic membrane separates…

A

External and middle ear

28
Q

The tympanic membrane is suspended within the…

A

Tympanic ring

29
Q

The inner layer of the tympanic membrane is in contact with the…

A

Malleus

30
Q

Site of attachment of the malleus to the tympanic membrane

A

Umbo (of the membrane)

31
Q

Give the order of ossicles in the middle ear

A

Tympanic membrane → Malleus → Incus → Stapes

32
Q

Cavum tympani is located in which bone?

A

Temporal bone, pars petrousus

33
Q

Guttural pouch

A
  • Equine only
  • Auditory tube forms a diverticulum
34
Q

Parts of the cavum tympani

A
  • Epitympanicum (dorsal part)
  • Mesotympanicum (middle part)
  • Hypotympanicum/tympanic bulla (ventral part)
35
Q

Location of the ossicles

A

Epitympanicum

36
Q

Which region of cavum tympani is the tympanic membrane?

A

Mesotympanicum

37
Q

The base of the stapes is pressed against…

A

The oval vestibular window

38
Q
A

Incus

39
Q
A

Stapes (with stapedial muscle)

40
Q
A

Malleus

41
Q
A

M. tensor tympani

42
Q
A

Tympanic membrane

43
Q
A

Manubrium mallei

44
Q
A

Tympanic membrane

45
Q
A

Tympanic ring

46
Q

Additional ossicle seen in juvenile animals…

A

Lenticular bone

  • Between the incus and stapes