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H&N Anatomy > Oral Cavity, tongue and pharynx > Flashcards

Oral Cavity, tongue and pharynx Flashcards

1
Q

Oral cavity - boundaries

A
  • roof = hard and soft palates
  • floor = mainly soft tissues, including tongue
  • lateral walls = cheeks
  • anterior = oral fissure
  • posterior = oropharynx
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2
Q

what is the oral vestibule?

A

space between the lips/cheeks and dental arches

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3
Q

Labial frenulum purpose

A

connects gingiva to the lips in the midline

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4
Q

Types of paipillae found on tongue

A
  • fungiform
  • foliate
  • vallate
  • filiform
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5
Q

which tongue papillae does not have tastebuds?

A

filliform

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6
Q

largest papillae, found anterior to terminal sulcus

A

Vallate

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7
Q

What separates the anterior 2/3rds to the posterior 3rd of the tongue?

A

the terminal sulcus

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8
Q

intrinsic muscles of the tongue - function

A

change shape and size of tongue

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9
Q

What are the intrinsic muscles of the tongue?

A

superior longitudinal
vertical
transverse
inferior longitudinal

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10
Q

The extrinsic muscles originate from outside of the tongue? what are their functions?

A

protruding, retracting, elevation and depression of the tongue

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11
Q

what are the extrinsic muscles of the tongue?

A

palatoglossus
styloglossus
hyoglossus
genioglossus

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12
Q

Genioglossus location

A
  • superior to geniohyoid muscles
  • originates from superior mental spine of mandible
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13
Q

Genioglossus function

A

protruding the tongue

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14
Q

Hyoglossus location

A
  • lateral to genioglossus
  • originates from grater horn of hyoid bone
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15
Q

Hyoglossus function

A

depressing the sides of the tongue

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16
Q

Where does the lingual artery enter the tongue?

A

between the hyoglossus and genioglossus

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17
Q

styloglossus origin

A

styloid process of temporal bone

18
Q

styloglossus function

A

elevating and retracting tongue

19
Q

Palatoglossus origin

A

the palatine aponeurosis

20
Q

tongue muscles motor innervation (not inc palatoglossus)

A

hypoglossal nerve

21
Q

palatoglossus motor innervation

A

vagus nerve

22
Q

general sensation anterior 2/3

A

mandibular nerve (CNV3)

23
Q

general sensation posterior 1/3 tongue

A

Glossopharyngeal (CNIX)

24
Q

special sensation anterior 2/3 tongue

A

facial nerve via Chorda tympani

25
Q

posterior 1/3 tongue special sensation

A

glossopharyngeal nerve

26
Q

blood supply of tongue

A
  • lingual artery
  • deep lingual and dorsal veins drain into IJV
27
Q

Hard palate is formed by

A

anterior 3/4 = palatine process of maxilla
posterior 1/4 = horizontal process of palatine bones

28
Q

Hard palate palate blood supply

A

greater palatine artery

29
Q

soft palate blood supply

A

lesser palatine artery

30
Q

Pharyngeal constrictors = function

A

pushing food bolus towards oesophagus

31
Q

pharyngeal elevators - function

A

lifts pharynx to receive food bolus from oral cavity

32
Q

What are the pharyngeal constrictors?

A

superior
middle
inferior

33
Q

Pharyngeal constrictors = nerve supply

A

vagus nerve via pharyngeal plexus

34
Q

Palatopharyngeus function

A

elevates pharynx and larynx
draws softs palate downwards

35
Q

palatopharyngeus nerve supply

36
Q

stylopharyngeus function

A

elevates pharynx and larynx

37
Q

stylopharyngeus nerve supply

A

glossopharyngeal nerve

38
Q

salpingopharyngeus originates from…

A

the auditory tube (pharyngotympanic tube)

39
Q

salpingopharyngeus function

A

elevates pharynx and larynx
helps open the auditory tube during swallowing for pressure equalisation in the middle ear

40
Q

Salpingopharyngeus nerve supply

H&N Anatomy (14 decks)

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