Exam 1: Trigeminal Flashcards
1
Q
Largest CN
A
Trigeminal
2
Q
Trigeminal carries more ___ than ___
A
Sensory fibers
Motor fibers
3
Q
Nickname of CN5
A
Great sensory neuron of face
4
Q
3 nuclei of termination
A
- Main sensory nucleus
- Spinal nucleus
- Trigeminal mesencephalic nucleus
5
Q
Nucleus of origin
A
Trigeminal motor nucleus
6
Q
Peripheral ganglion
A
Trigeminal (semilunar) ganglion
7
Q
3 peripheral branches
A
Ophthalmic
Maxillary
Mandibular
8
Q
Sensory info that goes to main trigeminal nucleus
A
Touch
Vibration
Joint proprioception
9
Q
Sensory info that goes to spinal nucleus
A
Pain
Temperature
10
Q
Sensory pathway to main and spinal nuclei: cell bodies in
A
Trigeminal ganglion
11
Q
Only CNS nucleus to contain cell bodies of primary sensory neurons
A
Mesencephalic nucleus
12
Q
Only branch to carry motor fibers
A
Mandibular
13
Q
Motor nucleus receives info from
A
- Cerebral cortex
- Red nucleus
- Reticular formation
- Tectum
- MLF
- Mesencephalic nucleus
14
Q
Apparent origin
A
Lateral aspect of pons
15
Q
Trigeminal ganglion located
A
Trigeminal cave (pouch of dura)
16
Q
Ophthalmic division carries senses from
Surface of head
A
- Skin over forehead
- Skin over nose
- Skin over scalp
17
Q
Ophthalmic division carries senses from
Inside body
A
- Mucous membrane in frontal sinus
- Mucous membrane in sphenoid sinus
- Membrane covering nasal septum
18
Q
4 branches of ophthalmic division
A
- Meningeal
- Lacrimal
- Frontal
- Nasociliary
19
Q
Meningeal nerve supplies
A
Dura mater lining middle cranial fossa
20
Q
____ given off before ophthalmic division leaves SOF
A
Meningeal branch
21
Q
Smallest of main branches of ophthalmic
A
Lacrimal
22
Q
Lacrimal nerve passes through ____ and reaches ____
A
Lacrimal gland
Skin of upper eyelid
23
Q
Lacrimal nerve also carries _____ fibers to lacrimal gland
A
Para Symp. Fibers
24
Q
Parasympathetic fibers traveling with lacrimal gland originated in ____ and reach lacrimal nerve via ____
A
Pterygopalatine ganglion (CN 7)
Zygomatic nerve (V2)
25
Largest major branch of ophthalmic
Frontal
26
2 branches of frontal nerve of ophthalmic
Supratrochlear
Supraorbital
27
Supratrochlear N conveys sense from
Medial corner of eye
28
Supraorbital N carries senses from
Conjunctiva
Upper eyelid
Forehead
Mucous membrane lining frontal sinus
29
3 branches and 2 terminal branches of nasociliary N of ophthalmic
1. Communicating branch to ciliary ganglion
2. Long ciliary N
3. Posterior ethmoid N
4. Anterior ethmoid N
5. Infratrochlear N
30
Branch of ophthalmic with most branches
Nasociliary (5 branches)
31
Long ciliary N supplies
Eyeball
32
Posterior ethmoid N carries sense from
Sphenoidal and ethmoidal sinuses
33
Anterior ethmoid N branches
External nasal N
Internal Nasal N
34
External nasal N supplies
Skin over nose
35
Internal nasal nerve supplies
Mucous membrane covering anterior part of nasal septum
36
Infratrochlear N supplies
Medial corner of eye (include lacrimal sac)
37
Ophthalmic division carries only ____ info
Sensory
38
Maxillary division carries only
Sensory info
39
Maxillary division enters ____ through foramen rotundum
Pterygopalatine fossa
40
Maxillary division carries info from
| External face
1. Skin between eyes and mouth
| 2. Skin over cheeks and temples
41
Maxillary division senses
| Inside
1. Mucosa lining maxillary sinuses
2. Nasal conchae
3. Palate
4. Gingiva
42
4 branches of maxillary division
1. Middle meningeal N
2. Zygomatic N
3. Ganglionic branches
4. Infraorbital N
43
____ (of maxillary division) given off before exiting foramen rotundum
Middle meningeal nerve
44
Middle meningeal N supplies
Meninges of middle cranial fossa
45
Zygomatic nerve of maxillary division gives off communicating branch carrying ______ from ______ to the lacrimal gland
Postganglionic parasympathetic fibers
Pterygopalatine ganglion
46
Zygomatic nerve of maxillary division gives rise to 3 branches
Communicating branch
Zygomaticotemporal N
Zygomaticofacial N
47
Zygomaticotemporal N supplies
Skin over temple
48
Zygomaticofacial N supplies
Skin over cheek
49
Zygomatic nerve enters orbit via
IOF
50
2 or 3 ganglionic branches carry info from _____
Upper pharynx
Nasal cavity
Palate
51
Ganglionic branches carry info through ____ to maxillary division
Pterygopalatine ganglion
52
Infraorbital N supplies
Lower eyelid
Skin over upper jaw
Maxillary sinus
53
Before entering infraorbital canal, infraorbital nerve gives off
Posterior, middle, and anterior Superior alveolar nerves
54
Infraorbital N travels through
Infraorbital fissure and infraorbital canal
55
____ found just above alveoli
Superior dental plexus
56
Posterior superior alveolar nerve supplies
Molars
57
Middle superior alveolar nerve supplies
Premolars
58
Anterior Superior alveolar Nerve supplies
Incisors
59
Preganglionic parasympathetic fibers reach pterygopalatine ganglion from facial nerve via
Greater petrosal nerve
60
Postganglionic sympathetic fibers from ____ pass through pterygopalatine ganglion
Superior cervical ganglion
61
____ pass through pterygopalatine ganglion
Sensory fibers
62
Mandibular division exit cranial vault via _____ as large sensory root and ____
Foramen ovale
Small motor root
63
Large sensory root and small motor root of mandibular division combine in
Intratemporal fossa
64
Mandibular division is
Mixed
65
Mandibular division carries motor Innervation to what 8 muscles
1. Masseter
2. Temporalis
3. Medial pterygoid
4. Lateral pterygoid
5. Tensor veli palatini
6. Tensor tympani
7. Mylohyoid
8. Ant belly of digastric
66
Mandibular division also carries sensation from
Skin over mandible, post cheek, post temple
| Mucosa of lower oral cavity and cheeks
67
2 branches given off in infratemporal fossa
1. Recurrent meningeal branch (Nervous spinosum)
| 2. Medial pterygoid nerve
68
Nervus spinosum reenters cranium via ____ and carries sensory info from
Foramen spinosum
Dura of middle cranial fossa, anterior cranial fossa, calvarium
69
Motor supply for medial pterygoid muscle
Medial pterygoid nerve
70
Medial pterygoid nerve also gives rise to fibers that pass through otic ganglion and supply
Tensor veli palatine
| Tensor tympani
71
Overall, medial pterygoid motor to ___ muscles
3
| Medial pterygoid, tensor veli palatine, tensor tympani
72
After the 2 branches are given off in the infratemporal fossa, mandibular nerve divides into
Mostly motor anterior division
| Mostly sensory posterior division
73
Anterior division of mandibular gives rise to
1. Masseter N
2. Deep temporal N
3. Lateral pterygoid N
4. Buccal N
74
Masseter nerve
Motor to ___
Sensory to ___
Masseter
Info from TMJ
75
Deep temporal N gives rise to ____ and ____, both of which supply ____
Anterior and posterior branch
Temporalis muscle
76
Lateral pterygoid N supplies
Lateral pterygoid
77
Buccal N supplies
Sensation from cheek (skin and mucosal surfaces) and buccal gingiva of molars
78
Major sensory branch of anterior division of mandibular division
Buccal N
79
Posterior division of mandibular N gives rise to
1. Auriculotemporal N
2. Lingual N
3. Inferior alveolar N
80
____ division is larger than the ___ division (mandibular division)
Posterior
Anterior
81
Auriculotemporal N passes through ____, Posterior to TMJ and into ___
Parotid gland
Infratemporal fossa
82
Auriculotemporal N carries sensory info from
Skin of temple and ear
83
Auriculotemporal N also carries post ganglionic parasympathetic fibers from ___
Otic ganglion
84
Lingual N conveys sensory info from
Mucosa of oral cavity
85
Lingual N combines with ____ in infratemporal fossa
Chorda tympani (branch of CN 7)
86
Inferior alveolar N carries sensory info from
Lower teeth and chin
87
2 branches of inferior alveolar N
Incisive branch
Mental N
88
Incisive branch supplies
Incisors
Canines
1st premolar
Adjacent gingiva
89
Mental N supplies
Labial gingiva adjacent to incisors and skin of lower lip of chin
90
Motor fibers carried in inferior alveolar N supply
Mylohyoid
Ant belly of digastric
