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

unit 3: trigeminal & its divisions Flashcards

(73 cards)

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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
largest branch off the ophthalmic division of trigem that divides into two branches: supratrochlear & supraorbital
frontal nerve
26
SUPRAtrochlear n. conveys sensation from
medial corner of eye
27
supraorbital n. carries sensation from:
conjunctiva upper eyelid forehead mucous membrane of frontal sinus
28
branch of the ophthalmic division that gives rise to 3 branches and 2 terminal branches
nasociliary nerve
29
branch of nasociliary nerve that goes to the ciliary ganglion
communicating branch
30
branch of nasociliary that supplies eyeball
long ciliary nerve
31
branch of nasociliary that carries sensory info from sphenoidal/ethmoidal sinuses
posterior ethmoid
32
the *anterior ethmoid nerve* (terminal branch of the nasociliary nerve), gives rise to two branches & supplies what
- external nasal: skin over nose | - internal nasal: mucous membrane over anterior nasal septum
33
the *INFRAtrochlear nerve* (terminal branch of nasociliary), supplies what
medial corner of eye | lacrimal sac
34
maxillary division of trigem, which is sensory only, enters the pterygopalatine fossa through the
foramen rotundum
35
maxillary division of trigem carries sensation from where
skin bt eyes & mouth cheeks & temples mucosa of maxillary sinuses, nasal concae, palate, gingivea
36
four branches of maxillary nerve
middle meningeal zygomatic ganglionic infraorbital
37
the middle meningeal nerve off the maxillary nerve supplies
meninges of middle cranial fossa
38
branch off of zygomatic nerve (of maxillary division) that carries postganglionic parasymp fibers from the pterygopalatine ganglion to the lacrimal gland
communicating branch
39
branch off the zygomatic nerve (of max division) that supplies skin over temple
zygomaticotemporal branch
40
branch off the zygomatic nerve (of max division) that supplies skin over cheek
zygomaticofacial branch
41
ganglionic branches to the maxillary division carry sensory info from these three areas through the pterygopalatine ganglion
upper pharynx nasal cavity palate
42
- 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
posterior superior alveolar: molars middle superior alveolar: premolars anterior superior alveolar: incisors
43
branches of the max division of trigeminal nerve are used to distribute postganglionic parasympathetic fibers from where
pterygopalatine ganglion
44
_______ parasympathetic fibers reach pterygopalatine ganglion from the *facial* nerve via greater petrosal nerve
preganglionic
45
_______ parasympathetic fibers from the *superior cervical ganglion* pass through the pterygopalatine ganglion, as do sensory fibers
postganglionic
46
a large sensory root & small motor root form the mandibular division of trigeminal in the infratemporal fossa, before exiting the cranial vault via
foramen ovale
47
the mandibular division carries sensation from:
- skin over mandible, posterior cheek, posterior temple | - mucosa of lower oral cavity & cheeks
48
the 8 muscles that the mandibular division supplies motor innervation to (4 mastication 4 other)
``` masseter temporalis medial & lateral pterygoid tensor veli platini tensor tympani mylohyoid anterior bell of digastric ```
49
two branches of the mandibular division that are given off in the infratemporal fossa
recurrent meningeal | medial pterygoid
50
after reentering the cranium via the *foramen spinosum*, the recurrent meningeal branch carries sensory info from
dura of middle cranial fossa, anterior cranial fossa, calvarium
51
two muscles aside from the pterygoid that the medial pterygoid supplies after passing through the otic ganglion
tensor veli palatini | tensor tympani
52
the mandibular nerve divides into a mainly _____ anterior division, and a mainly ____ posterior division
motor | sensory
53
branches off of the anterior division of the mandibular
masseter deep temporal lateral pterygoid buccal
54
nerve branch of the anterior division of the mandibular that provides motor to the masseter and sensory to the TMJ
masseter
55
motor nerve branch of the anterior division of the mandibular with an anterior & posterior branch that supply the temporalis muscle
deep temporal
56
motor nerve branch of the anterior division of the mandibular that supplies the lateral pterygoid muscle
lateral pterygoid
57
*major sensory* nerve branch of the anterior division of the mandibular that conveys sensation from cheek, buccal gingivae of molars
buccal
58
branches off the posterior division of the mandibular
auriculotemporal ligual inferior alveolar
59
the auriculotemporal nerve, a posterior mandibular branch, passes thru the parotid gland, posterior to TMJ, into infratemporal fossa, carries sensory info from
skin of temple & ear
60
the auriculotemporal nerve carries some *postganglionic parasympathetic fibers* from the
otic ganglion
61
the lingual nerve, a posterior mandibular branch, conveys sensory info from
mucosa of oral cavity
62
the lingual nerve combines with the __ ___ in the infratemporal fossa
chorda tympani
63
the inferior alveolar nerve, a posterior mandibular branch, carries sensory info from
lower teeth | chin
64
along with accompanying motor fibers, the inferior alveolar nerve has two branches, the ___ & ____ nerves
incisive | mental
65
the incisive branch, off of the inferior alveolar nerve, supplies
incisors canines first premolars & adjacent gingivae
66
the mental branch off of the inferior alveolar nerve supplies
labial gingivae adjacent to incisors | skin of lower lip & chin
67
before the inferior alveolar nerve passes through the mandibular foramen, motor fibers diverge from it and supply these two muscles
mylohyoid | anterior belly of digastric
68
two autonomic ganglia that communicate with the mandibular division
submandibular | otic
69
after the lingual nerve combines with chorda tympani, it sends PREganglionic parasympathetic fibers to the_____ ganglion
submandibular
70
the ____ ganglion sends POSTganglionic parasympathetic fibers to the parotid gland via the auriculotemporal nerve
otic
71
occasionally, the lingual nerve may convey ___ info to the chorda tympani
taste
72
inflamed trigeminal nerve that causes tic doloreaux, pain to the face pattern of the nerve, and resolves with time
tigeminal neuralgia
73
clinical condition in which a virus remains in DRG, usually in thoracic, along trigeminal branch, aka shingles
herpes zoster

PNS exam 1 (7 decks)

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