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Neuro III > oral cavity & submandibular region > Flashcards

oral cavity & submandibular region Flashcards

1
Q

what is included in the oral region

A 
oral cavity
cheeks and lips
teeth and gingivae
tongue
tonsils
salivary glands
palate
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2
Q

what makes up the oral cavity

A

oral cavity proper and vestibule

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3
Q

what are the boundaries of the oral cavity

A

lateral/anterior- teeth gums
superior- hard/soft palate
inferior- floor of mouth
posterior- fauces

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4
Q

what is the vestibule of oral cavity

A

space between lips/cheeks and teeth
opens externally at the oral fissure between lips
mm of facial expression controling shape and size of oral fissure
parotid duct opens into vestibule opposite to upper 2nd molar

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5
Q

What are the external and internal structure of lips

A

externally- covered by skin

internally covered by mucus membrane

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6
Q

what are the mm of facial expression

A 
orbicularis oris
levator labii superioris
levator anglui oris
zygomaticus
risorius
levator labii superioris alaeque nasi
depressor anguli oris
depressor labii inferioris
mentalis
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7
Q

what mm controls frowning

A

depressor labii inferioris, anguli oris

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8
Q

what mm elevate the upper lip

A

levaor labii superioris
levator anguli oris
zygomaticus major and minor
levator labii superioris alaeque nasi

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9
Q

what m protrudes lower lip

A

mentalis

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10
Q

what m flares nostrils

A

levator labii superioris alaeque nasi

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11
Q

what m causes a wide smile

A

risorius

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12
Q

what inn the upper lip

A

V2 via infraorbital branches

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13
Q

what inn lower lip

A

v3 via mental and buccal branches

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14
Q

describe lymph drainage of oral cavity

A

submental lymph nodes from medial part lower lip

submandibular lymph from all other regions

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15
Q

How many teeth do we have

A 
32 permanent
16 deciduous(baby teeth)
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16
Q

describe the names of teeth

A

incisors-4 canine-12 and premolars-4 molars-6

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17
Q

What is the gingivae

A

mucus membrane and fibrous tissue attached to the alveolar processes of the mandible and maxilla bones, also attached to neck of teeth

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18
Q

what inn the teeth

A

maxillary teet from superior alveolar branches of V2

mandibular teeth from inferior alveolar branches of V3

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19
Q

What inn the maxillary gingivae

A

palatine portion by nasopalatine and greater palatine n from V2
vestibular portion from superior alveolar branches of V2

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20
Q

what inn the mandicular gingivae

A

internal from lingual n V3

external from buccal and inferior alveolar n, mental branch V3

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21
Q

describe lymph drainage of teeth

A

submandibular lymph nodes
mandibular incissors drain to submental lymph
3rd maxillary molars drain to superior deep cervical lymph

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22
Q

What part of the tongue is immobile

A

posterior 1/3 because anchored to mandible, hyoid and syloid process

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23
Q

what are the external features of the tongue

A

terminal sulcus
foramen cecum
median sulcus
median and lateral glossoepiglottic folds
epiglottic vallevulae
papillae- vallate, filiform (no taste buds), fungiform, foliate, lingual tonsils
frenulum of tongue

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24
Q

What are the intrinsic mm of tongue

A

longitudinal
vertical
transverse

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25
Q

what mm allow for tongue to curl

A

longitudinal

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26
Q

what are the extrinsic mm of tongue

A

genioglossus, hyoglossus, styloglossus, palatoglossus

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27
Q

o i action inn genioglossus

A

o: mental spine of mandible
i: dorsum of tongue from apex to hyoid
inn: hypoglossal n
bilateraly protrudes tongue, acting unilateral and pushed tongue to opp side

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28
Q

o i action and inn hyoglossus

A

o: hyoid bone
i: inferolateral side of tongue
inn: hypoglossal n
action: retracts, depresses tongue

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29
Q

o i action and inn styloglossus

A

o: styloid process
i: superolateral side of tongue
inn: hypoglossal n
action: retracts, elevates tongue

30
Q

o i inn action palatoglossus

A

o: soft palate
i: tongue
inn: vagus
action: pulls tongue and soft palate together during swallowing

31
Q

what is the motor inn to tongue

A

hypoglossal n GSE to all mm except palatoglossus

Vagus n SVE to palatoglossus

32
Q

what are signs in someone who has damage to hypoglossal

A

tongue deviates toward lesioned side because genioglossus m push tongue contralaterally

33
Q

What is the sensory inn of tongue

A

Anterior 2/3 GSA lingual branch V3, taste SVA facial via chorda tympani
posterior 1/3 GVA IX, SVA taste IX

34
Q

what is the sensory inn of epiglottic region

A

GVA internal laryngeal branch X

SVA taste superior laryngeal branch of X

35
Q

Blood supply of tongue

A

lingual a

36
Q

what are the branches of lingual a

A 
dorsal lingual a (posterior tongue/palatine tonsil)
sublingual a (floor of mouth)
deep lingual a (anterior tongue)
37
Q

describe venous drainage of tongue area

A

lingual cc drain to internal jugular v

venae comitantes hypoglossi drain floor and parallel course of hypoglossal n to end in common facial v

38
Q

describe lymph drainage of tongue area

A 
posterior 1/3- superior deep cervical lymph nodes (bilateral)
anterior 2/3:
lateral- submandibular ipsi
middle- inferior deep cervical nodes b/l
apex- submental (medial portion b/l)
39
Q

What tonsils make up Waldeyer’s ring

A

lingual tonsils
pharyngeal tonsils
palatine tonsils
tubal

40
Q

where are lingual tonsils

A

deep to mucosa of posterior 1/3 tongue

41
Q

where are pharyngeal tonsils

A

in pharyngeal recess of nasopharynx

42
Q

where are palatine tonsils

A

located at opening of oropharynx between arches

43
Q

wehre are the tubal tonsils

A

opening of auditory tube

44
Q

what are adenoids

A

inflamed pharyngeal tonsils

45
Q

What n wraps around the submandibular duct

A

the lingual n

46
Q

what mm does the submandibular duct run between

A

mylohyoid and hyoglossus

47
Q

descirbe PAN to parotid gland

A 
salivatory nucleus
IX -tympanic branch- lesser petrosal
otic ganglion
auriculotemporal branch V3
secretomotor and stimulates gland secretion
48
Q

the postgang fibers SAN to parotid run with what

A

external carotid nerve

49
Q

describe PAN to submandibular sublingual glands

A 
salivatory nucleus
VII -chordatympani joins with lingual
submandibular ganglion
lingual branch V3
secretomotor and stimulates salivation
50
Q

describe submandibular ganglion

A

suspended form lingual nerve within posterior floor oral cavity
has postgang cell bodies PAN
inn glnds

51
Q

where do SAN posganglionc fibers run to submandibular and sublingual glands

A

external carotid n

52
Q

what are the boundaries of the submandibular region

A

infeiror- anterior and posterior bellies of digastric m
superior- mandible
roof- cervical investing fascia
floor- mylohyoi dm

53
Q

what are the contents of the submandibular region

A

submandibular gland, facial a, XII, suprahyoid mm

54
Q

what are the suprahyoid mm

A

digastric, stylohyoid, mylohyoid and geniohyoid

55
Q

o i inn action digastric

A

o: ant belly on digastric fossa mandible. post belly on mastoid notch temporal bone
i: hyoid
inn: ant V3, post VII
depresses mandible and elevates hyoid

56
Q

o i inn action stylohyoid

A

o: styloid process
i: hyoid
VII
elevates and retracts hyoid

57
Q

o i action inn mylohyoid

A

o: mylohyoid line of mandible
i: midline raphe and hyoid
inn: mylohyoid branch of V3
elevates hyoi and floor of mouth, assists with opening mouth

58
Q

o i action inn geniohyoid

A

o: mental spines of madible
i: hyoid
inn: C1 via hypoglossal
elevates hyoid
when hyoid is fixed, opens mouth

59
Q

what are the branches of lingual a

A 
dorsal lingual (posterior tongue)
sublingual a (floor of mouth)
deep lingual a (anterior tongue)
60
Q

where do the lingual vv drain to

A

internal jugular v

61
Q

describe venae comitatntes hypoglossi

A

parallel hypoglossal n and end in common facial v

62
Q

how do sublingual drugs work

A

absorbed right into lingual vv which go to internal jugula v, rapid absorption

63
Q

how do sublingual drugs work

A

absorbed right into lingual vv which go to internal jugula v, rapid absorption

64
Q

What nn inn oral cavity

A

lingual n, hypoglossal n, glossopharyngeal n, vagus

65
Q

describe course of lingual n

A

runs between hyoglossus and mylohyoid mm then wrap around submandibular duct and pierce tongue laterally
GSA to floor mouth, and ant 2/3 tongue

66
Q

describe information that runs in lingual but is not from V3

A

SVA via chorda tympani

GVE-P via chorda tympani

67
Q

where does hypoglossal n run compated to occipital a

A

runs lateral to it

68
Q

what type of info is in hypoglossal n

A

GSE- extrinsic tongue mm (except palatoglossus)

GSE- intrinsic tongue mm

69
Q

where does IX course

A

passes between superior and middle constrictors , pierces tongue posteriorly

70
Q

what type of info runs in IX

A

GVA posterior 1/3 tongue

SVA posterior 1/3 tongue

71
Q

what branch of vagus enters oral cavity posteriorly

A

internal branch superior laryngeal n

72
Q

what info is carried in internal laryngeal n

A

GVA epiglottic region

SVA epiglottic region

Neuro III (10 decks)

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