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159 - Regional Anesthesia and Conscious Sedation > Trigeminal Nerve > Flashcards

Trigeminal Nerve Flashcards

1
Q

T/F. CNV is the largest cranial nerve

A

T

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2
Q

CNV has afferent and efferent fibers

A

Afferent = sensory (from semilunar ganglion)
Efferent = motor
Mesencephalic (third root) = proprioception of TMJ

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3
Q

Divisions of CNV (3)

A

Ophthalmic Nerve
Maxillary Nerve
Mandibular Nerve

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4
Q

Smallest division of CNV

A

CNV1 (Ophthalmic)

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5
Q

Division of CNV that exits through superior orbital fissure

A

CNV1 (Ophthalmic)

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6
Q

Purely sensory division of CNV

A

CNV1 (Ophthalmic) & CNV2 (Maxillary)

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7
Q

Division of CNV that exits through foramen rotundum

A

CNV2 (Maxillary)

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8
Q

Largest division of CNV

A

CNV3 (Mandibular)

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9
Q

Mixed nerve division of CNV

A

CNV3 (Mandibular)

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10
Q

Division of CNV that exits through foramen ovale

A

CNV3 (Mandibular)

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11
Q

Nerve that branches off before CNV1 exits the superior orbital fissure

A

Nervous tentorii (innervates dura mater of the brain)

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12
Q

Branches of CN V1 (3)

A

Lacrimal
Frontal
Nasociliary

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13
Q

Innervation of lacrimal nerve

A

lacrimal gland and conjunctiva

(SKL: smallest nerve)

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14
Q

Branches of Frontal nerve (2)

A

Supraorbital and supratrochlear

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15
Q

Innervations of frontal nerve (FSS)

A

forehead
skin of upper eyelid
scalp

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16
Q

Branches of nasociliary nerve (3)

A

In the orbit (4)
In the nasal cavity
Terminal branches

17
Q

Terminal branch of V1

A

infratrochlear nerve

18
Q

Innervations of the terminal branch of V1 (LSS)

A

Lacrimal sac and caruncle

Skin of the medial parts of eyelids

Skin over bridge of nose

19
Q

Nasociliary branches in the orbit (4) (SLAP)

A

Short ciliary nerves (eyeball) - from long ciliary ganglion

Long ciliary nerve (iris & cornea)

Anterior ethmoid nerve

Posterior ethmoid nerve (ethmoid cells & sphenoid sinus)

20
Q

Branches of Anterior ethmoid nerve

A

Internal nasal branches (mucous membrane)

External nasal branches (skin over tip of nose and ala of the nose)

21
Q

Pathway of V2

A

exits the skull through the foramen rotundum > pterygopalatine fossa (near pterygopalatine ganglion) > enter inferior orbital fissure > pass through the infraorbital groove > exit through the infraorbital foramen

22
Q

Branches of V2 (4)

A

Pterygopalatine
Infraorbital
Terminal branches
Zygomatic

23
Q

Nerve that branches off of V2 before it exits through foramen rotundum

A

Middle meningeal nerve (innervates dura) (nervous tentorii counterpart)

24
Q

Branches of Zygomatic nerve (2)

A

Zygomaticotemporal (skin over temporal region)

Zygomaticofacial (skin over zygomatic bone prominence)

25
Q

Terminal branches of CNV2 (3)

A

Inferior palpebral (skin over lower eyelid)

External/Lateral nasal (skin of the nose)

Superior labial (upper lip)

26
Q

Branches of the infraorbital nerve (2)

A

Middle Superior Alveolar (MSAN) - Mx PM to MB root of 6s, supporting structures & facial gingiva

Anterior Superior Alveolar (ASAN) - Mx anteriors, supporting structures & facial gingiva

27
Q

Branches of the pterygopalatine nerve (3)

A

Palatine
Nasopalatine
Posterior Superior Alveolar (PSAN)

28
Q

Innervations of nasopalatine nerve

A

Soft tissue of nasal septum; gingiva &
palatal soft tissue lingual to anterior teeth

29
Q

Innervation of PSAN

A

Mx molars except MB root of 6s, supporting structures & facial gingiva; mucosa of partof maxi sinus; cheek mucosa next to maxi molars

30
Q

Branches of Palatine nerve (3)

A

Greater palatine (mucosa of post. hard palate; palatal gingiva medial to post. teeth)

Middle palatine (tonsils; mucosa of soft palate)

Lesser palatine (tonsils; mucosa of soft palate)

31
Q

Branches from undivided V3

A

Nervous spinosus (dura)

Nerve to internal pterygoid muscle (internal pterygoid, tensor tympani, & tensor palatini muscles)

32
Q

Branches from divided V3

A

Anterior (Mainly motor)
Posterior (Mainly sensory)

33
Q

Branches of the anterior division of V3 (4)

A

Long buccal (Mucosa & skin of cheeks up to corner of mouth; buccal gingiva Md molars & sometimes 2nd PMs) = (sensory)

Masseteric (masseter & TMJ)

Posterior & Anterior temporal (temporalis muscle)

Lateral pterygoid

34
Q

Branches of Posterior division of V3 (3)

A

Auriculotemporal
Lingual
Inferior Alveolar

35
Q

Branches of the inferior alveolar nerve

A

Mylohyoid (mylohyoid & digastric) (motor)

Dental branch of IAN (Md posteriors & supporting structures)

Mental (Facial gingiva of Md anteriors & PMs; mucosa & skin of lower lip & chin to midline)

Incisive (Md anteriors & supporting structures)

159 - Regional Anesthesia and Conscious Sedation (10 decks)

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