Trigeminal Nerve Flashcards by Amanda Pearman

The trigeminal nerve is the sensory nerve for the ____ and the motor nerve for the:

Face

Muscles of mastication and several small muscles

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The trigeminal ganglion is the large senseory ganglion of ____

It forms what nerves?

CN V

Opthalmic nerve (CN V1)

Maxillary nerve (CN V2)

SENSORY component of the mandibular nerve (CN V3)

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3 divisions of the trigeminal ganglion, type of nerve. They exit the middle cranial fossa via…

Opthalmic - sensory - superior orbital fissure

Maxillary - sensory - foramen rotundum

Mandibular- sensory and motor - ornament ovale

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The motor fibers of the trigeminal nerve runs with:

Sensory fibers of the mandibular division

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The motor root of the trigeminal nerve leaves the ___ ___ fossa through __ ___ in association with the:

Middle cranial

Foramen ovale

Third division of the sensory root

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The motor root of the trigeminal nerve unites with the sensory root or form:

Which is:

Single nerve trunk

Mandibular branch of the trigeminal nerve

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The motor fibers of the tri nerve supply what muscles?

Mastication muscles (masseter, temporalis, medial and lateral pterygoid)

Mylohyoid

Ant belly of digastric

Tensor tympani

Tensor palatini

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Sensory fibers meeting in the ____ ____. These are located in the ____ part of the ____ bone.

Trigeminal ganglia (gasserian ganglia)

Petrous part

Temporal bone

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The sensory root divides into what 3 branches?

Ophthalmic

Maxillary

Mandibular

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The ophthalmic nerve (CN V1) has (#) branches that’s pass through the ____ ___ ___ and supply structures in the ___.

What are the branches?

Superior orbital fissure

Orbit

Lacrimal nerve

Frontal nerve

Nasociliary nerve

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The lacrimal nerve passes to the _____ gland, giving ____ branches to the:

Its distal part also carries _____ _____ conveyed to it from the _____ _____.

Lacrimal

Sensory

Conjunctiva and skin

Secretomotor fibers

Zygomatic nerve (CN V2)

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The frontal nerve divides into the _______ and _____ nerves, providing ____ innervation to the:

Supra-orbital and supratrochlear nerves

Sensory

Superior eyelid, scalp and forehead

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The nasociliary nerve provides ____ innervation to the:

Sensory

Eyeball

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The nasociliary nerve gives rise to what branches?

Infratrochlear nerve

Ethmoidal nerves

Long ciliary nerves

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What is a terminal branch of the nasociliary nerve?

Infratrochlear (with ethmoidal nerve)

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What does the infratrochlear nerve supply?

Eyelids, conjunctiva, skin of the nose and lacrimal sac

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The ethmoidal nerves divide into ____ and ____ branches that supply:

Anterior and posterior

Mucus membrane of the sphenoidal and ethmoidal sinuses

And nasal cavities and dura mater of the anterior cranial fossa

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The long ciliary nerves supply the ______. They convey ____ _____ fibers to the ____ ____ and _____ fibers from the ___ and ___

Eye ball

Postsynaptic sympathetic

Dilator pupillae

Afferent

Iris and cornea

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The ciliary ganglion consists of _____ _____ nerve cell bodies. It is located between the ___ ___ and the ____ ____

Postsynaptic parasympathetic

Optic nerve (CN I)

Lateral rectus

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The ciliary ganglion receives nerve fibers from what 3 sources?

Sensory fibers from CN Vi Ivan the nasociliary nerve

Presynaptic parasympathetic fibers from CN II

Postsynaptic sympathetic fibers from the internal carotid plexus

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Short ciliary nerves arise from the _____ ____ and consist of:

Ciliary ganglion

Postsynaptic parasympathetic fibers originating in the ciliary ganglion

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The short ciliary nerves travel through the:

And leave the cranial cavity through:

Lateral wall of cavernous sinus

Superior orbital fissure into the orbit

The maxillary nerve is wholly:

CN (V2)

Sensory

Branches of the maxillary nerve within the cranium

Middle meningeal Nerve

Branches of the maxillary nerve in the pterygopalatine fossa

Zygomatic nerve - zygomaticofacial - zygomaticotemporal Post. Sup. Alveolar nerve Pterygopalatine ganglionic branches

Maxillary nerve branches from ganglia:

Orbital nerve Post. Superior nasal nerves Nasapalatine nerve Greater palatine nerve Lesser palatine nerve- pharyngeal branch

The infra-orbital nerve is a continuation of:

Maxillary nerve

The infra-orbital nerve enters the orbit via ___ _____ ____. It transverses: Here it gives rise to:

Inferior orbital fissure Infraorbital groove and canal Ant sup alveolar nerve Middle sup alveolar nerve

Where does the post superior alveolar nerve arise? It is a branch of:

infratemporal fossa infra-orbital nerve

After emerging through the infraorbital foramen, the infra-orbital nerve divides into what branches?

inferior palpebral internal and external nasal superior labial

infra-orbital nerves supplies:

mucosa of maxillary sinus maxillary teeth skin and conjunctiva of inf eyelid skin of cheek lateral nose anteroinferior nasal septum skin and oral mucosa of upper lip

Smaller terminal branch of the zygomatic nerve what does it supply?

zygomaticofacial skin on prominence of cheek

larger terminal branch of zygomatic nerve it sends a communicating branch to _____ nerve in orbit and supplies:

zygomaticotemporal lacrimal skin overlying anterior part of temporal fossa

Mandibular is largely:

sensory, but also receives motor fibers

the mandibular nerve descends through the ___ ____ to enter the ____ fossa and dividing into

foramen ovale infratemporal fossa anterior and posterior trunks

motor fibers of the mandibular nerve supply:

muscles of mastication | masseter, temporal, medial, and lateral pterygoids

branches of the posterior trunk of the mandibular nerve

auriculotemporal inf alveolar lingual

the auriculotemporal nerve rises via (#) roots that encircle the ____ ___ artery and then unite into a single trunk

2 middle meningeal

the auriculotemporal nerve passes ____, medial to the: it supplies:

posteriorly neck of the mandible sensory fibers to the auricle and temporal region

The auriculotemporal nerve also sends articular fibers to: And parasympathetic secretomotor fibers to the:

TMJ parotid gland

The inf alveolar nerve enters the _____ foramen and passes through the ____ ____ forming the:

mandibular mandibular canal inferior dental plexus

the inf alveolar nerve supplies:

all mandibular teeth of that side

the inf alveolar nerve gives rise to:

nerve to mylohyoid mental nerve/lingual nerve

the nerve to mylohyoid is a (LARGE/SMALL) branch that arises just before entering the ______ foramen. It supplies:

small mandibular mylohyoid and ant belly of digastric muscles

the mental nerve/lingual nerve passes through the _____ foramen and supplies:

mental skin and mucous membrane of the lower lip skin of the chin

the lingual nerve lies anterior to the ___ ___ nerve. It is sensory to:

inf alveolar nerve the anterior 2/3 of the tongue floor of mouth lingual gingivae

the lingual nerve joins the ____ ___ nerve. It carries ____ fibers from the the: Also provides:

chorda tympani (branch of the facial nerve) taste ant 2/3 of the tongue presynaptic parasympathetic secretomotor fibers for the submandibular and sublingual salivary glands

the anterior division of the mandibular nerve is the (LARGER/SMALLER) branch

smaller

branches of the ant division of the mandibular nerve

buccal nerve muscular branches to muscles of mastication (masseter, temporalis, medial and lateral pterygoid)

the buccal nerve arises in the _____ fossa, uniting with: It supplies

infratemporal buccal branches of facial nerve skin and oral mucosa of cheek

the otic ganglion (___) is in the _____ fossa just inf to the ____ ___

parasympatetic infratemporal foramen ovale

presynaptic parasympathetic fibers of the otic ganglion are derived mainly from the:

glossopharyngeal nerve (CN IX)

postsynaptic parasympathetic fibers of the otic ganglion pass from the ___ to the ___ ___ through the _____ nerve

ganglion parotid gland auriculotemporal

review clinical relevance. Not sure he will quiz over this

trigeminal neuralgia