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ANAT3004 LECTURES > WEEK 11 - ORAL CAVITY > Flashcards

WEEK 11 - ORAL CAVITY Flashcards

1
Q

list the contents in the vestibule

A
  • inside the lips and cheeks
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2
Q

what is the vestibule superficial to

A

t eeth and alveolar arches

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3
Q

what does the vestibule consist of

A
  • labial and buccal sulci
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4
Q

list the layers of the check in chronological order

A
  • oral mucosa
  • buccinator
  • buccal fat pad
  • parotid duct
  • muscles of facial expression
  • skin
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5
Q

list the features of the tongue

A
  • dorsal surface
  • ventral surface
  • body
  • apex
  • root
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6
Q

what does the dorsal surface of the tongue consist of

A
  • oral and pharyngeal
  • palatoglossal folds
  • sulcus terminalis
  • foramen caecum
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7
Q

what does the ventral palatine tongue consist of

A
  • frenulum
  • deep lingual veins
  • fimbriated folds
  • sublingual folds
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8
Q

alveolar lingual sulcus

A
  • horshoe shaped cavity in the oral cavity proper
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9
Q

what does the alveolar lingul sulcus contain

A

sublingual folds and openings of sublingual ducts

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10
Q

location of the pharyngeal tongue

A
  • from sulcus terminalis to epiglottiswhat
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11
Q

what does the lingual tonsils consist of

A
  • lymphatic nodules surrounding a single indentation or crypt
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12
Q

what does the lingual tonsils receive

A
  • mucous secreting glands
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13
Q

pharyngeal tongue contents

A
  • valleculae
  • medial and lateral glossoepiglottic folds
  • palatine tonsils
  • palatopharyngeal fold
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14
Q

function of the intrinsic tonguie muscles

A

only change the shape of the tongue

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15
Q

list the two diff sub categories of the intrinsic tongue muscles

A
  • superior longitudinal and inferior longitudinal
  • vertical and transverse
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16
Q

list the superior longitudinal tongue muscles

A
  • saggital under dorsal mucosa
  • apex up
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17
Q

function of superior longitudinal and inferior l

A

shorten the tongue

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18
Q

extrinsic muscles of the tongue

A
  • genioglossus
  • hypoglossus
  • styloglossus
  • palatoglossus
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19
Q

blood supply of tongue

A

lingual artery
and lingual vein

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20
Q

what is the lingual artery a branch of

A

external carotid artery

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21
Q

where does the lingual artery pass

A

medial to the posterior hypoglossus

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22
Q

what is the lingual vein a tributary of

A
  • internal jugular vein
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23
Q

nerve supply of the anterior 2/3 and posterior 1/3

A
  • general sensation
  • special sensation
  • somatic motor
  • autonomic
    sympathetic
    parasympathetic
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24
Q

anterior 2/3 of tongue general sensation

A

lingual nerve

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25
Q

special sensation of anterior 2/3 of tongue

A

chorda tympani

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26
Q

somatic motor of the anterior 2/3 tongue

A

hypoglossal nerve

27
Q

sympathetic fibres for anterior 2/3 of tongue coming from

A

hitchhikers from eca

28
Q

parasympathetic fibres from anterior 2/3 tongue

A
  • chorda tympani
29
Q

posterior 1/3 tongue general sensation

A

glossopharyngeal and vagus

30
Q

what does the chorda tympani join with

A

lingual nerve of v3 below foramen ovale and hitchhikes into the oral cavity

31
Q

intrinsic salivary gland s

A
  • numerous, small
32
Q

where are intrinsic salivary glands

A
  • in mucosa, submucosa
  • tongue oropharynx and upper respiratory system
33
Q

how many extrinsic salivary glands

A
  • 3 pairs large
34
Q

where are extrinsic salivary glands located

A
  • outside oral cavity and drains into the via duct
35
Q

what is the intrinsic salivary glands connected via

A

short duct

36
Q

what do von ebners glands produce

A
  • serous producing
37
Q

where are von ebners glands scattered through

A
  • muscles in the oral tongue and open into moats around vallate papilla and foliate papilla
38
Q

list the three pairs of extrinsic salivary glands

A
  • parotid gland> serous
  • submandibular gland > mixed
  • sublingual > mucous
39
Q

function of extrinsic salivary glands

A
  • secrete large amount of saliva when eating
40
Q

where do extrinsic salivary glands empty into

A

empty contents into oral cavity via ducts

41
Q

where is the parotid gland located

A
  • lateral to ramus of mandible and masseter
42
Q

where is the parotid gland enclosed in

A

parotid capsule, an extension of deep cervical fascia

43
Q

what passes through the parotid gland

A
  • eca
  • retromandibular vein
  • facial nerve
44
Q

where does the parotid gland leave

A

the gland via the superficial surface of the masseter, pierces buccinator to empty into vestibule adjacent to the second molar

45
Q

parotid gland innervation

A

parasympathetic: glossopharyngeal and auriculotemporal nerve
sympathetic: external carotid plexus
sensory: auriculotemporal nerve

46
Q

where is the submandibular gland

A

medial to the body of the mandible

47
Q

where does the submandibular duct open into

A
  • sublingual papilla in the oral cavity proper
48
Q

innervation of the submandibular gland

A

parasympathetic - chorda tympani
sympathetic - external carotid plexus
sensory - lingual nerve

49
Q

where is the sublingual gland located between

A

oral mucosa of the floor of the mouth and mylohyoid in sublingual fossa

50
Q

hard palate situ

A

palatine process of maxilla

51
Q

soft palate situ

A
  • oral mucosa on oral side
52
Q

what is within soft palate

A

muscles and aponeuroses of palatine muscles
fat and glands

53
Q

list the five paired muscles of palate

A
  • levator palati
  • tensor palati
  • palatoglossus
  • palatopharyngeus
  • uvula muscles
54
Q

innervation of palate

A
  • pharayngeal plexus > glossopharyngeal, vagus and sympathetic trunk
55
Q

sensory and parasympathetic innervation of palate

A
  • nasopalatine nerve
  • greater palatine nerve
  • lesser palatine nerve
56
Q

where do most of the oral cavity drain into

A

submandibular and submental mental nodes from there into the deep cervical nodes

57
Q

function of GFN

A

-

58
Q

where does the lesser petrosal nerve arise from

A
  • tympanic plexus
59
Q

where does lesser petrosal nerve enter

A

middle cranial fossa via tympanic canaliculis then descends through foramen ovale with V3

60
Q

Where do the pre-ganglionic parasympathetic fibers synpase onto

A

otic ganglion below foramen ovale

61
Q

function of hypoglossal nerve

A

solely somatic motor fibresd
innervates intrinsic and extrinsic muscles of tongue

62
Q

location and course of hypoglossal nerve

A
  • exits cranial fossa via hypoglossal canal
  • picks up hitcchikers from C1 outside canal
  • travels deep to the intermediate tendon of digastric muscles
  • releases c1 hitcchikers to form nerve loop in neck with inferior root of ansa cervicalisw
63
Q

what does the hypoglossal nerve innervate

A
  • thyrohyoid and geniohyoid

ANAT3004 LECTURES (12 decks)

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