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CHI280 - Human Anatomy 1 > Lecture 8: Ear > Flashcards

Lecture 8: Ear Flashcards

0
Q

External ear is separated from the middle ear by the?

A

Tympanic membrane and cavity

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1
Q

Blood supply to the ear

A

Branches of the external carotid artery

  • posterior auricular artery
  • superficial temporal artery
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2
Q

An ear infection is properly referred to as?

A

Ostitis media

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3
Q

Malleus articulates with what and is attached to what?

A

Attached to tympanic membrane, articulates with incus

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4
Q

Incus articulates with what?

A

Articulates with both malleus and stapes

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5
Q

Stapes articulates with what

A

Smallest; articulates with INCUS and it’s footplate fits into the OVAL WINDOW.

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6
Q

Tensor tympani function?

A

Tenses membrane to reduce oscillations

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7
Q

Stapedius function?

A

Prevents excessive movement of stapes

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8
Q

Auditory pathway begins where and finishes where?

A

From medial geniculate to inferior colliculus

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9
Q

What is Vertigo?

A
  • Illusion or perception of motion.
  • Condition involving peripheral vestibular system or its CNS connections.
  • Caused by: MS, migraine, vascular disease, brainstem tumours, viral infections, excessive endolymph…
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10
Q

Articulation of ossicles does what?

A

Increase force, decrease amplitude of vibrations from tympanic membrane

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11
Q 
CHORDA TYMPANI (branch of facial nerve) crosses which 
surface of the neck of MALLEUS?
A

Medial

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12
Q

CHORDA TYMPANI – is the nerve responsible for what to ANTERIOR 2/3 OF TONGUE?

A

SPECIAL SENSORY (TASTE)

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13
Q

although chorda tympani passes through the TYMPANIC CAVITY it does not play a role in?

A

hearing or balance.

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14
Q

What is the innervation to the lobe of the ear?

A

Great auricular C2,C3

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15
Q

What is the Innervation to the Tragus of the ear?

A

Auriculotemporal

16
Q

What is the Innervation to the external part of the tympanic membrane?

A

Auriculotemporal and small auricular branches of vagus

17
Q

What is the Innervation to the internal surface of tympanic membrane?

A

Glossopharyngeal nerve

18
Q

Which auditory ossicle is attached to the tympanic membrane?

A

Malleus

19
Q

Which auditory ossicle is the smallest and its footplate fits into the oval window?

A

Stapes

20
Q

What nerves can be located in the middle ear?

A

Chorda tympani, tympanic nerve plexuses from glossopharyngeal nerve

21
Q

Tensor tympani is innervated by what nerve ?

A

Mandibular

22
Q

Stapedius is innervated by what nerve?

A

Facial

23
Q

What is the Innervation of the inner ear?

A

Vestibulocochlear nerve

24
Q

The mucosal lining of the tympanic cavity is innervated by what nerve?

A

Glossopharyngeal nerve

CHI280 - Human Anatomy 1 (22 decks)

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