Trigeminal Nerve Flashcards
The trigeminal nerve is the sensory nerve for the ____ and the motor nerve for the:
Face
Muscles of mastication and several small muscles
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)
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
The motor fibers of the trigeminal nerve runs with:
Sensory fibers of the mandibular division
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
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
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
Sensory fibers meeting in the ____ ____. These are located in the ____ part of the ____ bone.
Trigeminal ganglia (gasserian ganglia)
Petrous part
Temporal bone
The sensory root divides into what 3 branches?
Ophthalmic
Maxillary
Mandibular
The ophthalmic nerve (CN V1) has (#) branches that’s pass through the ____ ___ ___ and supply structures in the ___.
What are the branches?
3
Superior orbital fissure
Orbit
Lacrimal nerve
Frontal nerve
Nasociliary nerve
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)
The frontal nerve divides into the _______ and _____ nerves, providing ____ innervation to the:
Supra-orbital and supratrochlear nerves
Sensory
Superior eyelid, scalp and forehead
The nasociliary nerve provides ____ innervation to the:
Sensory
Eyeball
The nasociliary nerve gives rise to what branches?
Infratrochlear nerve
Ethmoidal nerves
Long ciliary nerves
What is a terminal branch of the nasociliary nerve?
Infratrochlear (with ethmoidal nerve)
What does the infratrochlear nerve supply?
Eyelids, conjunctiva, skin of the nose and lacrimal sac
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
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
The ciliary ganglion consists of _____ _____ nerve cell bodies. It is located between the ___ ___ and the ____ ____
Postsynaptic parasympathetic
Optic nerve (CN I)
Lateral rectus
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
Short ciliary nerves arise from the _____ ____ and consist of:
Ciliary ganglion
Postsynaptic parasympathetic fibers originating in the ciliary ganglion
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
