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ENT > Anatomy Spots > Flashcards

Anatomy Spots Flashcards

1
Q

where does the chorda tympani cross over?

A

internal aspect of the tympanic membrane

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2
Q

what is the sensory nerve supply to the inferior part of the external acoustic meatus?

A

vagus

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3
Q

what nerves supply the tympanic membrane?

A

outer surface = mainly V3 (with some contribution from vagus)
inner surface = glossopharyngeal

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4
Q

what nerve supplies sensory info to mucosa of nasal cavity?

A

V3

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5
Q

what 4 structures pass through the jugular foramen?

A

left CN IX
left CN X
Left CN XI
internal jugular vein

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6
Q

what nerve supply sensory info to the tragus of the pinna?

A

anterior rami of C2 and C3 spinal nerves

- also supply ear lobe

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7
Q

what protective function does the zygomatic process have?

A

prevents anterior dislocation of the TMJ

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8
Q

where is the hypoglossal canal found?

A

occipital bone

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9
Q

what travels through the facial canal?

A

fibres of facial nerve transmitting taste from anterior 2/3rds of tongue

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10
Q

where does the squamous part of the temporal bone articulate with the frontal, sphenoid and parietal bones?

A

pterion (H shaped join)

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11
Q

where is the otic capsule found?

A

petrous part of temporal bone

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12
Q

where does the sphenoid sinus drain into?

A

sphenoethmoidal recess (above superior concha)

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13
Q

what is the sensory supply to the palatine tonsil?

A

CN IX (glossopharyngeal)

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14
Q

how is the facial nerve unique?

A

mixed function

- 4 axon modalities

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15
Q

how may the facial nerve be damaged and give 2 possible effects of this

A

can be damaged during salivary gland or internal/middle ear surgery
can present with dry eye surface and taste dysfunction

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16
Q

what kind of mucosa covers the nostril and hard palate?

A

keratinised (mainly)

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17
Q

where is Kiesselbach’s area found?

A

septum

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18
Q

what is the crista galli?

A

bony projection from the top of the cribiform plate of the ethmoid bone
forms part of the roof of the nasal cavity

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19
Q

where is the middle concha found?

A

feature of ethmoid bone

20
Q

sensory nerve supply to the eustachian tube?

A

CN IX

21
Q

where is the opening of the internal acoustic meatus found?

A

posterior cranial fossa

22
Q

the opening if the eustachian tube is closely related to what structure in the nasopharynx?

A

adenoids (pharyngeal tonsils)

23
Q

the opening of the nasolacrimal duct is most likely to be damaged in what kind of fracture?

A

le fort 1

24
Q

where is the arytenoid muscle found?

A

in pre-tracheal deep cervical fascia below level of C3

25
Q

what nerve innervates the arytenoid muscle?

A

CN X

26
Q

what is the function of the arytenoid muscle?

A

not involved in whispering
sphincteric function
- quiet/loud speech

27
Q

what nerve innervates the tonsillar sinus?

A

CN IX

28
Q

what part of the cricoid cartilage is compressed against the osesophagus during an emergency to prevent aspiration?

A

cricoid lamina

29
Q

what is the function of the cricoid arch?

A

landmark in cricothyrotomy

30
Q

at what vertebral level is the thyroid cartilage found?

A

C5

31
Q

which cervical vertebrae is palpable?

A

C7

32
Q

where does the oesophagus begin?

A

C6

33
Q

where is a laryngoscope inserted?

A

vallecula

- depression behind the root of the tongue

34
Q

what 3 structures are found deep to the mucosa in the throat?

A

eustachian tube
tubal tonsil
salpingopharyngeus

35
Q

characteristic feature of soft palate, hard palate and laryngopharynx?

A

soft palate = arches
hard palate = bilateral ruggae
laryngopharynx = bilateral fossa

36
Q

what nerve passes through the foramen ovale?

A

CN V3

37
Q

lymph from the tip of the tongue drains to which lymph nodes?

A

submental

38
Q

sensory nerve supply to the epiglottis?

A

superior laryngeal

39
Q

which group of muscles looks like a Scotland flag (cross)?

A

arytenoid muscle

40
Q

what is the function of the palatopharyngeus muscle?

A

protects lower resp tract during swallowing

contracts in nasal speech

41
Q

what nerve supplies the palatopharyngeus muscle?

A

CN X

42
Q

what muscle/nerve is tested by sticking out the tongue?

A

genioglossus

CN XII

43
Q

what muscle/nerves are being testes when patient says (ahhh)?

A

levator veli palatine

CN X and CN V3

44
Q

what nerve innervates the stylopharyngeus muscle?

A

CN IX

45
Q

what muscle does the parotid duct pierce through?

A

buccinator

46
Q

from which pharyngeal arch is tensor veli palatine derived from?

A

1

ENT (21 decks)

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