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PRIYA ENT > ENT anatomy summary > Flashcards

ENT anatomy summary Flashcards

1
Q

where is the ethmoid bone found in relation to the nose

A

behind it

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2
Q

where does the sphenoid sinus drain into

A

sphenoethmoidal recess

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3
Q

where do the posterior ethmoidal air cells drain into

A

superior meatus

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4
Q

which 2 structures drain into middle meatus

A

semilunal hiatus

ethmoid bull

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5
Q

what does semilunal hiatus have openings for

A
  • frontal and maxillary sinuses

- anterior ethmoidal air cells

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6
Q

what does the ethmoidal bulla have an opening for

A

middle ethmoidal air cells

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7
Q

what drains into the anterior meatus

A

nasoclarimal duct

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8
Q

is the concha above or below its associated meatus

A

above

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9
Q

which cartilage is the larynx made mostly of? which is made of different cartilage?

A

most hyaline

epiglottis = elastic

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10
Q

what is another name for the scala media

A

cochlear duct

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11
Q

what is the cochlear duct a component of

A

membranous labyrinth

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12
Q

when are the scala vestibule and tympani continuous with each other? what is this called

A

helicotrema

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13
Q

what is the modiolus and what does it contain

A

the boney core which the cochlea encircles

contains canals for conveying blood vessels and distributing branches of the cochlear nerve

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14
Q

where is the organ of corti located

A

cochlear duct / scala media

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15
Q

which is the most inwardly depressed part of the tympnaic membrane?

A

umbo

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16
Q

which way does the cone of light normally face

A

anterioinferiorly

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17
Q

CN responsible for sensory tymani

A

CN V3

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18
Q

CN responsable for stapedius

A

CN VII

19
Q

which 5 things does the glossopharyngeal nerve innervate (CN IX)

A 
middle ear cavity 
ET
nasopharynx
oropharynx
palatine tonsil
20
Q

back of ear

A

C2,3 spinal nerves via lesser occipital nerve

21
Q

front of external ear

A

C2,3 spinal nerves via greater auricular nerve

22
Q

dots on external ear –> middle ear

A

CN VII facial nerve

23
Q

pinna> superior part of EAM

A 
CN V3 (via auriculotemporal nerve ) 
superior parts of EAM and most of tympanic membrane
24
Q

inferior part of EAM and tympanic membrane

A

CN X

25
Q

anterior 2/3rds of tongue

A

facial nerve

26
Q

somatic motor facial nerve goes to which 4 places

A
  1. muscles of facial expression (temporal, zygomatic, buccal, mandibular + cervical)
  2. stapedius
  3. posterior belly of diagnostic
  4. stylohyoid
27
Q

visceral motor / parasympathetic facial nerve goes to where

A

lacrimal gland, submandibular and sublingual glands, minor glands of nasal cavity and palate

28
Q

which nerve associated with chords tympani

A

lingual nerve

29
Q

which pharynx muscle causes opening

A

lateral pyterygoid

30
Q

which pharynx muscle is associated with the shoudler

A

omrohyoid

31
Q

name the 4 muscles of the tongue

A

palatoglossus
styloglossus
hyoglossus
genioglossus

32
Q

what are 3/4 tongue muscles innervated by

A

CN XII

33
Q

which tongue muscle isn’t innervated by CN XII? what is it innervated by? how do you remember this?

A

palatoglossus - CN X

‘ have to plait my hair for my ex ‘

34
Q

what does tensor veil palatini do

A

tenses palatine aponeurosis

35
Q

what does levator veil palatini do

A

lifts palatine aponeurosis

36
Q

what do the 2 palatine muscles do together

A

close the ET

37
Q

what are all (apart from one) of the soft palate muscles innervated by

A

CN X

38
Q

which soft palate muscles isn’t innervated by CN X and what is it innervated by?

A

tensor veli palatini

V3

39
Q

which muscle shortens uvula

A

musculus uvulae

40
Q

which muscle elevates pharynx and depresses soft palate

A

palatopharyngeus

41
Q

where does anterior ethmoid artery course

A

enters sphenoid bone

courses down to the tip of the nose

42
Q

what does the modified Romberg test test for?

A

likelihood of falling
input - vestibular
output - vestibulopinal

43
Q

tastebuds have lifespan of

A

10 days

44
Q

what may hyposmia be an early sign of

A

parkinsons

PRIYA ENT (8 decks)

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