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PNS exam 1 > unit 3: trigeminal & its divisions > Flashcards

unit 3: trigeminal & its divisions Flashcards

1
Q

mixed cranial nerve with more sensory than motor, is the largest

A

trigeminal

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2
Q

three continuous nuclei of termination associated with trigeminal

A

main sensory
spinal
trigeminal mesencephalic

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3
Q

the one nucleus of origin for trigeminal

A

trigeminal motor nucleus

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4
Q

the one peripheral ganglion for trigeminal, which is a PNS structure

A

trigeminal (semilunar) ganglion

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5
Q

three peripheral branches (divisions) of the trigeminal

A

ophthalmic
maxillary
mandibular

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6
Q

cell body location of the trigeminal sensory pathways to the main & spinal nuclei

A

trigeminal ganglion

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7
Q

peripheral processes (dendrites, sensory) come from this location to the trigeminal nucleus

A

face

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8
Q

for touch, vibration, & joint proprioception, central processes from the trigem ganglion go to which nucleus

A

main trigeminal

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9
Q

for pain and temperature, central processes from the trigem ganglion go to which nucleus

A

spinal

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10
Q

spinal tracts analogous to the main/spinal nuclei

A

lateral spinal thalamic (pain)
anterior spinal thalamic (touch)
gracilis, cuneatis (vibratory)

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11
Q

only sensory neurons to have cell bodies located in the CNS

A

to mesencephalic nucleus

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12
Q

peripheral dendrites pass THROUGH the trigeminal ganglion before ascending to this nucleus

A

mesencephalic

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13
Q

axons from the motor nucleus leave CNS, travel thru trigem ganglion, and are carried in which branch

A

mandibular branch (trigeminal nerve)

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14
Q

muscles supplied by the trigeminal nerve (mandibular division -only to carry motor)

A

mastication

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15
Q

motor nucleus of trigeminal n. receives info from:

A 
cerebral cortex
reticular formation
red nucleus
tectum 
medial longitudinal fasiculus
mesensephalic nucleus
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16
Q

apparent origin of trigeminal nucleus

A

lateral aspect of pons

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17
Q

location of trigeminal ganglion, after the nerve travels anteriorward over temporal bone

A

trigeminal (meckel’s) cave (which is a pouch of dura)

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18
Q

like CN III, IV, VI, the ophthalmic division of trigeminal enters the orbit via:

A

superior orbital fissure

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19
Q

two trigeminal divisions that are sensory only

A

ophthalmic

maxillary

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20
Q

ophthalmic division of trigem carries sensation from:

A
  • skin over nose, forehead scalp
  • mucous membranes of frontal/sphenoid sinuses
  • membrane over nasal septum
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21
Q

four branches of ophthalmic division of trigem

A

meningeal nerve (tentorial branch)
lacrimal nerve
frontal nerve
nasociliary nerve

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22
Q

branch that is given off before the ophthalmic division leaves the SOF that supplies middle cranial fossa’s dura mater

A

meningeal nerve

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23
Q

branch of the ophthalmic division travels along lateral rectus superiorly, passes through lacrimal gland and ends up at upper eyelid skin

A

lacrimal nerve (smallest)

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24
Q

two nerves that are utilized by the lacrimal nerve to send parasympathetic fibers from the pterygopalatine ganglion to the lacrimal gland

A

zygomatic
zygomaticotemporal
(both are maxillary branches)

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25
Q

largest branch off the ophthalmic division of trigem that divides into two branches: supratrochlear & supraorbital

A

frontal nerve

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26
Q

SUPRAtrochlear n. conveys sensation from

A

medial corner of eye

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27
Q

supraorbital n. carries sensation from:

A

conjunctiva
upper eyelid
forehead
mucous membrane of frontal sinus

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28
Q

branch of the ophthalmic division that gives rise to 3 branches and 2 terminal branches

A

nasociliary nerve

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29
Q

branch of nasociliary nerve that goes to the ciliary ganglion

A

communicating branch

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30
Q

branch of nasociliary that supplies eyeball

A

long ciliary nerve

31
Q

branch of nasociliary that carries sensory info from sphenoidal/ethmoidal sinuses

A

posterior ethmoid

32
Q

the anterior ethmoid nerve (terminal branch of the nasociliary nerve), gives rise to two branches & supplies what

A
  • external nasal: skin over nose

- internal nasal: mucous membrane over anterior nasal septum

33
Q

the INFRAtrochlear nerve (terminal branch of nasociliary), supplies what

A

medial corner of eye

lacrimal sac

34
Q

maxillary division of trigem, which is sensory only, enters the pterygopalatine fossa through the

A

foramen rotundum

35
Q

maxillary division of trigem carries sensation from where

A

skin bt eyes & mouth
cheeks & temples
mucosa of maxillary sinuses, nasal concae, palate, gingivea

36
Q

four branches of maxillary nerve

A

middle meningeal
zygomatic
ganglionic
infraorbital

37
Q

the middle meningeal nerve off the maxillary nerve supplies

A

meninges of middle cranial fossa

38
Q

branch off of zygomatic nerve (of maxillary division) that carries postganglionic parasymp fibers from the pterygopalatine ganglion to the lacrimal gland

A

communicating branch

39
Q

branch off the zygomatic nerve (of max division) that supplies skin over temple

A

zygomaticotemporal branch

40
Q

branch off the zygomatic nerve (of max division) that supplies skin over cheek

A

zygomaticofacial branch

41
Q

ganglionic branches to the maxillary division carry sensory info from these three areas through the pterygopalatine ganglion

A

upper pharynx
nasal cavity
palate

42
Q
  • nerves off of the infraorbital nerve of the maxillary division and which teeth they supply, in addition to the lower eyelid & maxillary sinus
  • travel thru infraorbital fissure, infraorbital canal
A

posterior superior alveolar: molars
middle superior alveolar: premolars
anterior superior alveolar: incisors

43
Q

branches of the max division of trigeminal nerve are used to distribute postganglionic parasympathetic fibers from where

A

pterygopalatine ganglion

44
Q

_______ parasympathetic fibers reach pterygopalatine ganglion from the facial nerve via greater petrosal nerve

A

preganglionic

45
Q

_______ parasympathetic fibers from the superior cervical ganglion pass through the pterygopalatine ganglion, as do sensory fibers

A

postganglionic

46
Q

a large sensory root & small motor root form the mandibular division of trigeminal in the infratemporal fossa, before exiting the cranial vault via

A

foramen ovale

47
Q

the mandibular division carries sensation from:

A
  • skin over mandible, posterior cheek, posterior temple

- mucosa of lower oral cavity & cheeks

48
Q

the 8 muscles that the mandibular division supplies motor innervation to (4 mastication 4 other)

A 
masseter
temporalis
medial & lateral pterygoid
tensor veli platini
tensor tympani
mylohyoid
anterior bell of digastric
49
Q

two branches of the mandibular division that are given off in the infratemporal fossa

A

recurrent meningeal

medial pterygoid

50
Q

after reentering the cranium via the foramen spinosum, the recurrent meningeal branch carries sensory info from

A

dura of middle cranial fossa, anterior cranial fossa, calvarium

51
Q

two muscles aside from the pterygoid that the medial pterygoid supplies after passing through the otic ganglion

A

tensor veli palatini

tensor tympani

52
Q

the mandibular nerve divides into a mainly _____ anterior division, and a mainly ____ posterior division

A

motor

sensory

53
Q

branches off of the anterior division of the mandibular

A

masseter
deep temporal
lateral pterygoid
buccal

54
Q

nerve branch of the anterior division of the mandibular that provides motor to the masseter and sensory to the TMJ

A

masseter

55
Q

motor nerve branch of the anterior division of the mandibular with an anterior & posterior branch that supply the temporalis muscle

A

deep temporal

56
Q

motor nerve branch of the anterior division of the mandibular that supplies the lateral pterygoid muscle

A

lateral pterygoid

57
Q

major sensory nerve branch of the anterior division of the mandibular that conveys sensation from cheek, buccal gingivae of molars

A

buccal

58
Q

branches off the posterior division of the mandibular

A

auriculotemporal
ligual
inferior alveolar

59
Q

the auriculotemporal nerve, a posterior mandibular branch, passes thru the parotid gland, posterior to TMJ, into infratemporal fossa, carries sensory info from

A

skin of temple & ear

60
Q

the auriculotemporal nerve carries some postganglionic parasympathetic fibers from the

A

otic ganglion

61
Q

the lingual nerve, a posterior mandibular branch, conveys sensory info from

A

mucosa of oral cavity

62
Q

the lingual nerve combines with the __ ___ in the infratemporal fossa

A

chorda tympani

63
Q

the inferior alveolar nerve, a posterior mandibular branch, carries sensory info from

A

lower teeth

chin

64
Q

along with accompanying motor fibers, the inferior alveolar nerve has two branches, the ___ & ____ nerves

A

incisive

mental

65
Q

the incisive branch, off of the inferior alveolar nerve, supplies

A

incisors
canines
first premolars & adjacent gingivae

66
Q

the mental branch off of the inferior alveolar nerve supplies

A

labial gingivae adjacent to incisors

skin of lower lip & chin

67
Q

before the inferior alveolar nerve passes through the mandibular foramen, motor fibers diverge from it and supply these two muscles

A

mylohyoid

anterior belly of digastric

68
Q

two autonomic ganglia that communicate with the mandibular division

A

submandibular

otic

69
Q

after the lingual nerve combines with chorda tympani, it sends PREganglionic parasympathetic fibers to the_____ ganglion

A

submandibular

70
Q

the ____ ganglion sends POSTganglionic parasympathetic fibers to the parotid gland via the auriculotemporal nerve

A

otic

71
Q

occasionally, the lingual nerve may convey ___ info to the chorda tympani

A

taste

72
Q

inflamed trigeminal nerve that causes tic doloreaux, pain to the face pattern of the nerve, and resolves with time

A

tigeminal neuralgia

73
Q

clinical condition in which a virus remains in DRG, usually in thoracic, along trigeminal branch, aka shingles

A

herpes zoster

PNS exam 1 (7 decks)

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