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Head and Neck 1 > cnV > Flashcards

cnV Flashcards

1
Q

what 4 GSA cranial nerves use the trigeminal sensory nucleus

A

V, VII, IX, X

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2
Q

what part of the trigeminal sensory nucleus senses proprioception and controls the jaw jerk reflex and force of bite

A

trigeminal mesencephalic nucleus

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3
Q

what part of the trigeminal sensory nucleus senses 2-point discrimination and pressure

A

trigeminal chief (pontine, primary, principle) sensory nucleus

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4
Q

what part of the trigeminal sensory nucleus senses pain, temp, light touch

A

trigeminal spinal (descending) nucleus

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5
Q

describe the basic sensory pathway (frist, second, third order) of cnV

A

first order - take all sensory info to the trigeminal nucleus and synapse with 2nd order neurons
second order - crosses the opposite side of the brainstem and travel up the brainstem (trigemninal lemniscus) to the ventral posteromedial nucleus and synapse int the thalamus 3rd order neurons
third order - neurons terminate in the primary somatosensory cortex

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6
Q

t/f. the portion of your brain that is affected during an injury relates to the same side of your face.

A

false. because second order neurons switch sides of the brainstem, the side of the brain that is affected translates to the opposite side of your face

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7
Q

3 divisions of the trigeminal nerve

A

opthalmic (v1)
maxillary (v2)
mandibular (v3)

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8
Q

which branch of cnV is sensory and motor

A

mandibular (v3)

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9
Q

general pathway of cnV

A

anterior pons through the post cranial fossa to the apex of the petrous part of the temporal bone in the mid cranial fossa, trigeminal/semilunar ganglion, 3 branches

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10
Q

where does v1 exit the skull

A

into the cavernous sinus out of the superior orbital fissure

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11
Q

where does v2 exit the skull

A

foramen rotundum

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12
Q

where does v3 exit the skull

A

foramen ovale

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13
Q

GSA of cnV1

A

sensory to forehead, sclap, eyelids, nose, eye, and mucous memb of nasal cavity and sinuses, starting at the trigem ganglion to the trigem sensory nucleus

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14
Q

innervation of supraorbital n of v1

A

branch of frontal n that innerates frontal sinus and skin superior to lateral orbit and lateral upper eyelid

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15
Q

innervation of supratrochlear n of v1

A

frontal sinus and skin superior to medial orbit and medial upper eyelid

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16
Q

innervation of lacrimal n of v1

A

conjunctiva, lacrimal gland, skin of upper eyelid

also communicates with zygomatic n of v2 and is used as a hitch hiker by cnVII

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17
Q

innervation of posterior ethmoid n of v1

A

branch of nasociliary n that innervates the ethmoid and sphenoid sinuses

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18
Q

innervation of anterior ethmoid n of v1

A

branch of the nasociliary n that innervates the ethmoid sinus and nasal cavity
branches into the external nasal n.

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19
Q

external nasal n of v1

A

branch of the anterior ethmoid that innervates the apex of the nose

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20
Q

infratrochlear n of v1

A

branch of the nasociliary n that innervates the conjunctiva, lacrimal structures and skin of the bridge of the nose and eyelids

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21
Q

long ciliary n of v1

A

branch of the nasociliary n that innervates the sclera and cornea

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22
Q

short ciliary n of v1

A

branch of the nasociliary n that innervates the ciliary body and iris

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23
Q

what are the components of the long ciliary nerve

A

sympathetic neurons from the superior cervical gang and sensory neurons from v1

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24
Q

what are the components of the short ciliary nerve

A

sympathetic nerurons from the superior cervical gang, sensory neurons from v1, and parasympathetic fibers from cnIII

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25
Q

GSA of cnV2

A

sensory of mid face, lower eyelid, mucous memb of nose and max sinuses, upper lip, max teeth and palate, starting at trigeminal ganglion to trigeminal sensory nucleus

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26
Q

posterior superior alveolar n of v2

A

sensory to mmax sinus, buccal gingiva along max molars, max molars

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27
Q

infraorbital n of v2

A

sensory to buccal givgiva of max central incisor, lat incisor, canines, and premolars; skin to inferior orbit and medial portion of superior lip

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28
Q

5 branches of infraorbital n

A

middle superior alveolar, anterior superior alveolar, nasal, palpebrael, superior labial

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29
Q

8 branches of v2

A

psa, infraorbita, zygomatic, gnaglionic branches, pharyngeal, nasopalatine, greater palatine, lesser palatine

30
Q

3 branches of v1

A

frontal, lacrimal, nasociliary

31
Q

middle superior alveolar n of v2

A

branch of infraorbital that innervates max sinus, max premolars

32
Q

anterior sup alveolar n of v2

A

branch of infraorbital that innervates max sinus, max central incisor, lateral incisor, and canine

33
Q

nasal n of v2

A

branch of infraorbital that innervates nasal cavity and nasal septum

34
Q

palpebrael n of v2

A

branch of infraorbital that innervates the skin of the lower eyelid

35
Q

superior labial n of v2

A

branch of infraorbital that innervates skin of upper lip

36
Q

communication to lacrimal n of v2

A

branchh of the zygomatic n that carries parasympathetic fibers from cnVII to the lacrimal n of v1

37
Q

zygomaticofacial n of v2

A

branch of the zygomatic n that innervates the skin inferior and lateral to the orbit and the lateral portion of superior lip

38
Q

zygomaticotemporal n of v2

A

branch of the zygomatic n that innervates the skin superior and lateral to the orbit

39
Q

ganglionic branches of v2

A

communicates between the zygomatic n of v2 and the lacrimal n of v1 that carries parasympathetic nerves from cnVII

40
Q

pharyngeal n of v2

A

innervates the nasopharynx

41
Q

nasopalatine n of v2

A

innervates the hard palate and palatal gingiva/mucosa and between canines

42
Q

greater (anterior) palatine n of v2

A

innervates hard palate and gingiva/muscosa between premolars and molars

43
Q

lesser (posterior) palatine n of v2

A

innervates the soft palate

sensory in gag reflex

44
Q

foramen the nasopalatine n travels through

A

foramen rotundum, pterygopalatine fossa, sphenopalatine foramen, incisive foramen

45
Q

t/f. there is typically no variation in between the superior alveolar nerves (post, mid, ant)

A

false. some people don’t have the msa

46
Q

describe the hitch hiking of cnVII via the pterygopalatine ganglion

A

the post ganglionic sympathetic fibers of the pterygopalatine n jump on the ganglionic branches of v2, then the zygomatic n of v2. they then get on the communicating branch of v2 to the lacrimal of v1 which will provide parasympathetics to the lacrimal gland

47
Q

GSA of v3

A

sensory to lower face and scalp, tongue and floor of mouth, mandibular teeth and part of the external ear
proprioception of muscles of mastication and tmj, staring at trigeminal gangion to trigeminal sensory nucleus

48
Q

SVE of v3

A

motor to muscles of mastication, ant digastric, mylohyoid, tensor tympani, tensor veli palatini, starting at the trigeminal motor nucleus

49
Q

innervation to the tmj

A

masseteric
auriculotemporal
post deep temporal

50
Q

meningeal n of v3

A

sensory to meninges

51
Q

tensor tympani n of v3

A

motor to tensor tympani

52
Q

tensor veli palatini n of v3

A

motor to tensor veli palatini

53
Q

medial pteryogoid n of v3

A

anterior division that is motor to medial pterygoid

54
Q

long (buccal) n of v3

A

anterior division that is sensory to buccal gingiva around mandibular molar, skin of cheek and lateral lower lip

55
Q

masseteric n of v3

A

anterior division of v3 that is motor to masseter and tmj

56
Q

deep temporal n (anterior and posterior) of v3

A

anterior division that is motor to temporalis

57
Q

lateral pterygoid n of v3

A

anterior division that is motor to lat pterygoid

58
Q

mylohyoid n of v3

A

posterior division that is motor to mylohyoid and ant digastric

59
Q

inferior alveolar n of v3

A

sensory to all mandibular teeth via incisive n and 2nd premolar and molars

60
Q

incisive n of v3

A

branch of the inferior alveolar that is sensory to mandibular teeth from first premolar anterior

61
Q

mental n of v3

A

branch of inferior alveolar that is sensory to buccal gingiva from 1st premolar andterio, skin of chin and medial lower lip

62
Q

lingual n of v3

A

sensory to lingual gingiva of mand teeth and ant 2/3

cnVII hitchhikes for taste ant 2/3 and parasympathetic to subling and submand glands

63
Q

auriculotemporal n of v3

A

sensory to tmj, skin of superior to ear and around the temple
cnIX hitchhikes parasympathetic to parotid gland through otic gang

64
Q

what is the portio minor

A

root of v3

65
Q

tic douloureux

A

trigeminal neuralgia

excruciating pain in v2 and v3

66
Q

signs and symptoms of horners syndrome

A 
ptosis (droopy eye)
anhidrosis (lack of sweat)
myosis (constricted pupil)
"PAM is horny"
problem with sympathetic nerve supply
67
Q

cn involved in the corneal reflex

A

sensory - nasociliary of v1

motor - temporal and zygomatic of v2

68
Q

cn involved in the cough reflex

A

sensory - int laryngeal of X

motor - recurrent laryngeal of X, phrenic, intercostal

69
Q

cn involved in the gag reflex

A

sensory - primarily IX, soft palate V2

motor - X

70
Q

cn involved in pupillary light reflex

A

sensory - II

motor - III (sympathetic and parasymp)

71
Q

cn involved in accomodation reflex

A

sensory - II
motor - III (parasymp)

(focusing near/distant objects)

Head and Neck 1 (7 decks)

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