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Flashcards in oral cavity Deck (58):
1

Identify

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pterygoid hamulus 

2

identify 

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palatine process of maxilla 

3

identify black arrow and green arrow

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black: horizontal plate of palatine bone

green: incisive foramen 

4

red arrow

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greater palatine foramen 

5

identify green

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lesser palatine foramina 

6

What are the two portions of the mouth seperated by the teeth

  • oral vestibule: teeth to cheek
  • oral cavity proper: inside teeth 

7

maxillary teeth are supplied sensory innervation by what nerve

superior alveolar nerves: numerous branches of CN V2

8

Sensory innervation to Mandibular teeth are supplied by what nerve

inferior alveolar nerve: primary branch of CN V3

9

Palate can be broken down into 2 sections, name them?

  • hard palate (anterior 2/3)
  • soft palate (posterior 1/3)

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10

Identify A. 

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tensor veli palatini 

 

11

identify E

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Levator veli palatini 

12

origin and insertion of tensor veli palatina and levator veli palatini

Origin: cartilagenous auditory (pharyngotympanic) tube

insertion: soft palate

 

13

Which palate muscle wraps around pterygoid hamulus

tensor veli palatini

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14

Innervation and action of tensor veli palatini

N: CN V3

A: tense soft palate

15

innervation and action of levator veli palatini

N: CN X

A: elevate soft palate 

16

If patient's uvula is deviated, what does this signify?

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vagus nerve impaired: levator veli palatini is not working.  Uvula will point toward working side 

17

identify green arrow

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cartilagenous auditory (pharyngotympanic) tube 

18

identify green box

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palatoglossus m.

19

identify red box

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palatopharyngeus m. 

20

origin and insertion of palatoglossus and palatopharyngeus muscle

O: both originate on soft palate

I: Pg: lateral side of posterior tongue

Pp: lateral wall of pharynx 

21

innervation and action of palatoglossus and paltapharyngeus

N: vagus n (CN X)

A: Pg: elevate tongue

Pp: elevate pharynx 

22

What 2 arches are formed from the muscle pairs of bilat palatoglossus and palatopharyngeus m.

palatoglossal arch

palatopharyngeal arch 

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23

What lies between the palatoglossus and palatopharyngeus mm.

palatine tonsil 

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24

The descending palatine artery, A branch off of the maxillary artery, splits into what 2 arteries that supply the palate?

  • greater palatine artery: hard palate
  • lesser palatine artery: soft palate 

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25

What branches off of the pterygopalatine ganglion innervate the palate

  • greater palatine nerve: hard palate
  • lesser palatine nerve: soft palate 

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26

identify A and B

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a: Lingual tonsil

b: valate papilla 

27

Intrinsic muscles of the tongue that provide fine control of tongue are innervated by what nerve

hypoglossal CN XII

28

identify

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Genioglossus m. 

29

green arrow

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styloglossus m. 

30

blue arrow

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hyoglossus m. 

31

palatoglossus m. is innervated by what ?

CN X

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32

deviated tongue signifies what?

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lesion to hypoglossal nerve causing atrophy on ipsilateral side 

33

lingual artery comes off of what artery? What is a branch off of the lingual artery?

  • external carotid a.
  • deep lingual artery 

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34

Where does the lingual vein come from? What is a branch off of the lingual vein

  • internal jugular vein
  • deep lingual vein 
  • lie near the inferior surface of the tongue and can be used as a site of drug absorption 

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35

what nerve supplies general sensory to anterior 2/3 tongue

lingual n. from CN V3

36

what nerve supplies special sensory taste to anterior 2/3 tongue

chorda tympani (From CN VII) hitchhiking of lingual n.

37

general sensory and special sensory (taste) to posterior 1/3 of tongue is supplied by what nerve

glossopharyngeal n. with small contribution from vagus (CN X) 

38

How can you differentiate betwwen lingual nerve and hypoglossal nerve (CN XII)

lingual nerve runs superiorly over lateral surface of hyoglossus m. whereas hypoglossal nerve runs inferiorly

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39

What 3 things run through the parotid gland

  • motor branches of facial nerve
  • retromandibular vein
  • external carotid artery 

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40

identify

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  • blue arrow: submandibular gland 
  • red arrow: submandibular duct

41

Name distinguishing features of submandibular duct

  • emerges from portion of gland superior to mylohyoid
  • corsses lingual nerve superiorly
  • empties via sublingual caruncle 

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42

Name distinguishing features of sublingual gland

  • deep to mucosa of the floor of oral cavity
  • empties via numerous ducts in sublingual folds 

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43

Name pathway of innervation to ssubmandibular and sublingual glands

CN VII-> chorda tympani n. -> hitch-hike on lingual n. (CN V3) -> submandibular ganglion (synapse) 

  • direct branches to submandibular gland
  • back to lingual n. -> siblingual gland 

44

sympathetic innervation to salivary glands

  • via external carotid plexus
  • lingual and facial artery plexus 

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45

The pharyngeal constrictors have what insertion and what innervation

  • insertion: midline pharyngeal raphe
  • innervation: vagus n

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46

Origin of the superior, middle, and inferior pharyngeal constrictor muscles

  • superior: pterygomandibular raphe
  • middle: greater horn of hyoid
  • inferior: thyroid and cricoid cartilage 

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47

What is the weak point in pharynx in inferior constrictor called.  What can happen here

  • Killian's triangle
  • common site of esophageal diverticulum formation 

48

Red arrow? What is it innervated by

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  • Salpingopharyngeus
  • vagus n. 

49

identify.  What is it innervated by

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  • palatopharyngeus m.
  • vagus n.

50

identify. what is its innervation

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  • stylopharyngeus m.
  • glossopharyngeal n. 

51

What structure lies in the nasopharynx and is the end of the cartilaginous auditory tube?

torus tubarius

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52

What nerves runs on the posterolateral surface of the stylopharyngeus m. in the oropharynx 

glossopharyngeal  (CN IX) 

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53

What nerve supplies sensory innervation to pharynx

glossopharyngeal n (CN IX) 

54

What nerve supplies motor sensation to pharynx

  • vagus n (CN VII)
  • glossopharyngeal (CN IX) to stylopharyngeus 

55

What nerves supply gag reflex

  • sensory limb: CN IX
  • motor limb: CN X 

56

 Lateral pharyngeal space

potential space between fascia surrounding pharynx

  • can easily collect infected material from oral cavity and palatine tonsils 

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57

tonsilar ring contains what tonsils

  • palatine tonsils
  • lingual tonsils
  • pharyngeal tonsils

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58

Identify a and d

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a: torus tubarius

d: salpingopharyngeal fold