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Oral Anatomy > Nerves of Oral Cavity > Flashcards

Nerves of Oral Cavity Flashcards

1
Q

nerves of the oral cavity include:

A

Trigeminal n. (CN V)
Facial n. (CN VII)
Glossopharyngeal n. (CN IX)
Hypoglossal n. (CN XII)

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2
Q

the trigeminal nerve originates in the ____

A

trigeminal ganglion

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3
Q

3 divisions of the trigeminal n.

A
  1. ophthalmic n (not to mouth)
  2. maxillary n. (to maxillary teeth)
  3. mandibular n. (to all mandibular teeth and muscles of mastication)
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4
Q

the ophthalmic nerve exits the cranium via the ____ in the ____ bone

A

superior orbital fissure; sphenoid

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5
Q

3 main branches of the ophthalmic n.

A

lacrimal n.
nasociliary n.
frontal n.

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6
Q

the maxillary n. exits the cranium via ____ in the sphenoid bone and goes into the _____

A

foramen rotundum; pterygopalatine space

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7
Q

4 branches of the maxillary n.

A
  1. pterygopalatine n.
  2. posterior superior alveolar n.
  3. infraorbital n.
  4. zygomatic n.
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8
Q

_____ (a branch of the pterygopalatine n.) passes through _____ to become the _____

A

descending palatine n.; greater palatine foramen; greater palatine n.

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9
Q

greater palatine n. supplies ____

A

mucosa of the posterior 2/3 of the hard palate and gingiva

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10
Q

branches of the pterygopalatine n.

A
  1. greater palatine n. (via descending palatine n.)
  2. nasopalatine n.
  3. lesser palatine n.
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11
Q

nasopalatine branch supplies ____

A

anterior 1/3 of the hard palate

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12
Q

lesser palatine branch goes to ____

A

tonsils and soft palate

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13
Q

greater palatine enters palate through the _____

A

greater palatine foramen

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14
Q

nasopalatine enters palate through _____

A

incisive foramen

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15
Q

lesser palatine enters palate through ____

A

lesser palatine foramina

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16
Q

PSA n. separates from the maxillary n. before its entry into the ____; it enters the maxillae behind and above the ____ through alveolar canals

A

infraorbital fissure; third molars

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17
Q

PSA n. goes to _____: pulps, ligaments, alveolar bone, and facial gingiva

A

maxillary molars

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18
Q

PSA n. supplies the maxillary molars EXCEPT _____

A

the mesiobuccal root of the maxillary first molars

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19
Q

branches of the infraorbital n.

A

middle superior alveolar n. (MSA)

anterior superior alveolar n. (ASA)

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20
Q

MSA goes to ____ and MB root of maxillary 1st molars as well as facial gingiva, bone, and ligament

A

maxillary premolar pulps

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21
Q

ASA branches to ____, facial gingiva, part of sinus, etc.

A

anterior teeth

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22
Q

infraorbital n. goes through the _____ (roof of maxillary sinus) giving off MSA and ASA

A

infraorbital canal

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23
Q

terminal branches of the infraorbital n. go through the _____ to the upper lip and nose

A

infraorbital foramen

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24
Q

zygomatic branch of the maxillary n. supplies skin of ____ and ____ (not to mouth)

A

temporal; orbit region

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25
Q

branches of the mandibular n.

A
  1. auriculotemporal n.
  2. buccal n. (long buccal/buccinator n.)
  3. lingual n.
  4. inferior alveolar n.
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26
Q

mandibular n. exits the cranium via ____

A

foramen ovale

27
Q

auriculotemporal n. provides sensation to the ____ and skin of the ____ anterior to the ear

A

outer ear; face

28
Q

auriculotemporal n. provides proprioception to the ____

A

TMJ

29
Q

buccal n. goes through ____ between heads of lateral pterygoid mm. to buccal gingiva of ____ and ____ (and buccal mucosa and skin of cheeks up to corner of mouth or commissure)

A

infratemporal space; molars and premolars

30
Q

buccal n. goes ____ to the ____ of the mandible, to the cheek and mucosa/gingiva next to the molars

A

lateral; ramus

31
Q

the facial nerve (CN VII) exits brain case via ____ into the _____

A

internal acoustic meatus; petrous part of the temporal bone

32
Q

the facial nerve is a ____ nerve with ____ and ____ branches

A

mixed; afferent; efferent

33
Q

branches of the facial nerve exit the temporal bone via ____ becoming ____ (for taste) and joining the ____ branch of CN V to the ____

A

petrotympanic fissure; chorda tympani; lingual; anterior 2/3 of the tongue

34
Q

branches of the facial nerve exit the temporal bone via _____ for efferent fibers

A

stylomastoid foramen

35
Q

efferent fibers of the facial nerve (CN VII) innervate the muscles of ____, including orbicularis oris and buccinator

A

facial expression

36
Q

secretory fibers of the facial nerve control secretion of the ____ and ____ salivary glands

A

submandibular; sublingual

37
Q

glossopharyngeal nerve (CN IX) exits the cranium via the _____

A

jugular foramen

38
Q

afferent fibers of CN IX supply _____ for general sensation and taste ; also go to the pharynx and tonsils

A

posterior 1/3 of the tongue

39
Q

secretory fibers of CN IX supply the ____

A

parotid gland

40
Q

efferent fibers of CN IX supply the muscles of the ____

A

pharynx

41
Q

hypoglossal n. (CN XII) exits the cranium via the ____ (on the walls of foramen magnum)

A

hypoglossal canals

42
Q

efferent fibers of the hypoglossal n. go to the muscles that move the ____

A

tongue

43
Q

afferent fibers to the tongue

A

CN V: general sensation to ant. 2/3 of tongue
CN VII: taste to anterior 2/3 of tongue
CN IX: general sensation and taste to posterior 1/3 of tongue

44
Q

efferent fibers to the tongue

A

CN XII: muscles that move the tongue

45
Q

____ (tongue m.) is innervated by CN X

A

palatoglossus

46
Q

secretory fibers to the salivary glands

A

CN VII: to submandibular and sublingual glands

CN IX: to parotid gland

47
Q

branch of the external carotid a. that goes to the tongue, floor of the mouth, sublingual gland, and adjacent gingiva

A

lingual a.

48
Q

branch of external carotid a. that goes to the soft palate, tonsils, pharynx, chin, floor of the mouth, and lips and nose

A

facial a.

49
Q

branch of the external carotid a. that goes to all maxillary and mandibular teeth and muscles of mastication

A

maxillary a.

50
Q

3 parts of the maxillary a.

A

mandibular part
pterygoid part
pterygopalatine part

51
Q

the mandibular part of the maxillary a. (to the mandible) includes the ____ (to molars and premolars), the ____ (to the chin and lower lip), and the ____ (to anterior teeth)

A

inferior alveolar
mental
incisive

52
Q

the pterygoid part of the maxillary a.(to the muscles) goes to the _____ and ____ muscle

A

muscles of mastication; buccinator

53
Q

the pterygopalatine part of the maxillary a. (to the maxillae) includes the ____ (to the molars), ____ (to the premolars and anterior teeth), and the _____ (to the nasal cavity, palate, and lingual gingiva)

A

PSA; infraorbital branches MSA and ASA; descending palatine

54
Q

veins drain blood from the face into the _____

A

common facial vein

55
Q

blood from the upper part of the face, including maxillary teeth is collected by the _____

A

pterygoid plexus

56
Q

the ____ drains the mandible and lower teeth into the pterygoid plexus

A

inferior alveolar v.

57
Q

the pterygoid plexus empties into the ____ and into the _____

A

maxillary vein; retromandibular v.

58
Q

the ____ runs parallel to the facial a. and collects from the ____ and ____ veins and muscles of mastication, nose, and eyes

A

facial v.; superior labial; inferior labial;

59
Q

the ____ collects blood from the tongue

A

lingual v.

60
Q

all orofacial veins drain via the ____ into the ____, ____ and to the heart

A

common facial vein; internal jugular v.; superior vena cava

61
Q

____ nodes drain the cheek, ear, and eyelids

A

parotid

62
Q

_____ nodes drain tip of tongue, anterior part of lower lip, anterior part of floor of mouth, and mandibular incisors

A

submental

63
Q

_____ nodes drain other maxillary and mandibular teeth, as well as posterior floor, tongue, upper lip, and part of the lower lip

A

submandibular

Oral Anatomy (9 decks)

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