Trigeminal nerve V Flashcards
lacrimal nerve
lateral aspect of the upper eyelid
supraorbital branch of frontal nerve
conjunctiva, mucosa of frontal sinus, skin of forehead, upper eyelid
supratrochlear branch of frontal nerve
skin of lower portion of the midline of the forehead, conjunctiva, skin of upper eyelid
infratrochlear nerve
sensation from medial angle of upper eyelid and the lacrimal sac
external nasal nerve
branch of anterior ethmoidal nerve, supplies median strip of external nose below the nasal bones
Ethmoidal nerves
sensory from ethmoidal air cells
Ciliary nerves
sensory from mucosa of the eyeball and the cornea
Inferior palpebral branches of infraorbital nerve
sensation from skin and conjuntiva of lower lid
Lateral nasal branches of infraorbital nerve
sensation from lateral portion of external nose
Superior labial branches of infraorbital
sensation from skin and mucous membrane of upper lip
Zygomaticotemporal nerve
skin of zygomatic prominence and lateral forehead
Zygomaticofacial nerve
skin of zygomatic prominence and medial aspect of cheek
sensory pathways of max.nerve go to what structure in the face?
labial, buccal, and lingual gingiva
labial and buccal gingiva
- Overlying central incisors, lateral incisors and canines – branches of anterior superior alveolar nerves and labial branches of infraorbital nerve.
- Overlying premolars-branches of the middle superior alveolar nerve
- Overlying 1st, 2nd and 3rd molars – branches of posterior superior alveolar nerve
lingual (palatal) gingiva
- Incisors and canines- nasopalatine nerve
- Maxillary premolars and molars –greater palatine nerve
Sensory Pathways of the Maxillary Nerve go to whichTeeth?
- Central incisor, lateral incisor and canines – anterior superior alveolar nerve
- 1st, 2nd premolars and mesiobuccal root of the 1st molar – middle superior alveolar nerve
- Remainder of 1st molar, 2nd molar and 3rd molar – posterior superior alveolar nerve.
nasal branched of max. nerve innervate what structure?
mucosa of the nasal cavity
Pharyngeal branches of max. nerve
mucosa of the superior portion of the pharynx
Middle meningeal nerve of max. nerve
given off within the cranium directly distal to Semilunar ganglion
inferior alveolar branch of man. nerve goes to which teeth?
Incisors, canines and premolars
gingival branches of the buccal branch of the mandibular nerve go to which teeth?
man. molars
gingival branches of the lingual nerve goes to which teeth?
lingual gingivae
inferior alveolar branch of man. nerve goes to which teeth?
all man. teeth
nervous spinosus gives sensory to what structure?
sensory to the meninges
Long buccal nerve gives sensory to what structure?
skin of the cheek, skin and mucous
Mental nerve gives sensory to what structure?
skin of the chin and skin and mucous membrane of the lower lip
Auriculotemporal nerve
-skin over zygomatic, buccal and mandibular portions of cheek
-skin over helix, tragus and external auditory meatus of the ear
-tympanic membrane of the ear
articular branches to the posterior portion of the TMJ
-superficial temporal branches supplying skin over the temporal region
Where does trigeminal nerve come out of when leaving the brain?
Mid pons
When the trigeminal nerve leaves the brain, what does it contain?
General somatic afferent and brachial efferent/motor
What nervous system is it associated with?
Peripheral nervous system
What are other names for the trigeminal ganglion?
Gasserian; semilunar
Where is the trigeminal ganglion located?
Petrous portion of the temporal bone
What cavity is it located in and what is it surround by?
Meckel’s cave – surrounded by dura mater
Trigeminal sensory goes through which nerves?
Ophthalmic, maxillary, mandibular
Trigeminal motor goes through which nerve?
Mandibular
What are the branches of the ophthalmic nerve and what do they innervate?
- Lacrimal (lateral aspect of your upper eyelid)
- frontal (supraorbital- conjunctiva, frontal sinus mucosa, skin of forehead, upper eyelid;
- supratrochlear- skin of lower portion of midline of forehead, conjunctiva, skin of upper eyelid),
- infratrochlear (median angle of the upper eyelid and lacrimal sac),
- external nasal (branch of ethmoidal nerve, supplies median strip of external nose below nasal bone),
- ethmoidal nerve (sensory from ethmoid hair cells), cilary (sensory of mucosa of eyeball and cornea)
External nasal is a branch of what nerve, which is a branch of what nerve?
External nasal is a branch of the ethmoidal nerve which is a branch of the ophthalmic nerve
In regards to ciliary reflex, what nerves is associated with sensory?
Ciliary nerves
In regards to ciliary reflex, what nerves is associated with motor and which muscle does it affect?
Facial nerve (CN 7); orbicularis oculi
What does orbicularis oculi do specifically?
It pulls the eyelid down
What foramen does the maxillary nerve exit the skull out of?
Foramen rotundum
Exiting the skull, what fossa does the maxillary nerve head into?
Pterygopalatine fossa
What nerve does the maxillary nerve continue on as?
Infraorbital nerve
What canal does it exit out of?
Infraorbital canal
True or false? The pteryogopalatine ganglia is part of the maxillary system?
F
Phayngeal branch of the pterygopalatine ganglion travels through which canal?
Palatovaginal canal
Which nerve does TASTE go to?
Facial nerve
What are the facial branches of the maxillary nerve and where do carry sensation from?
- Inferior palpebral (skin and conjunctiva of lower eyelid),
- lateral nasal (lateral portion of external nose),
- superior labial (skin and mucosa of upper lip),
- zygomaticotemporal (skin of zygomatic prominence and lateral forehead)
- zygomaticofacial (skin of zygomatic prominence and medial aspect of the cheek)
What nerve is involved with the central and lateral incisors, and canine gingiva?
Anterior superior alveolar, labial branches of infraorbital
What teeth does that middle superior alveolar nerve associate with?
Premolars 1 and 2, and mesiobuccal root of 1st molar
Which nerves go to the lacrimal gland?
Zygomatic and zygomaticotemporal (NOT zygomaticofacial)
What foramen does the mandibular nerve exit through that’s between the skull and infratemporal
Fossae?
Foramen ovale
The anterior branch of the mandibular nerves ends as what nerve?
The “long buccal nerve of CN5” (sensory)
Buccal nerve is associated with which cranial nerve?
CN 7 (facial)
What nerves does the posterior branch of the mandibular nerve give off?
Lingual nerve, inferior alveolar nerve, auriculotemporal nerve
Where do these nerves run?
Deep (posterior) aspect of the maxillary artery
Which nerve runs both deep AND facial to the middle meningeal artery?
Auriculotemporal nerve
What three things are associated with the lingual nerve (when in the oral cavity)?
Somatic afferent, taste, parasympathetic motor
Where does it get taste and parasympathetic motor from?
Chorda tympani
Which cranial nerve is the chorda tympani a branch of?
CN 7 (facial)
What does the chorda tympani wrap around?
Tympanic membrane
When lingual nerve runs into the oral cavity, what nerve does it run anterior to?
Inferior alveolar nerve
When heading down into the mandible, what foramen does it go through?
Mandibular foramen
Before doing through this foramen what nerve branch does it give off and what does it innervate?
Nerve to the Mylohyoid and anterior digastric
What fissure is the chorda tympani running through to get to the infratemporal fossae?
Petrotympanic fissure
Which cranial nerve is the lesser petrosal nerve a branch of?
CN 9 (glossopharyngeal)
What aspect does the lingual nerve and inferior alveolar nerve run in reference to the maxillary artery?
On the deep/posterior aspect of maxillary artery
What branch of maxillary artery that heads up to the foramen spinosum?
Middle meningeal
Which nerve runs both deep and superficially to the middle meningeal artery?
Auriculotemporal nerve
Auriculotemporal nerve is a branch of which nerve?
Mandibular nerve (posterior division)
What is a fissure?
A divided line between two bones
Which nerve innervates the gingiva of the incisors, canines and premolars?
Inferior alveolar nerve
Which nerve innervates the gingiva of the mandibular molars?
Gingival branch of the buccal branch of the mandibular nerve
Which nerve innervates the lingual gingiva?
Gingival branch of the lingual nerve
All mandibular teeth are innervated by what nerve?
Inferior alveolar
What is the pathway of sensory from the meninges leaving the skull and heading back into the skull?
Leaves the skull through the foramen spinosum, into the mandibular nerve, through the foramen ovale, to the gasserian ganglion, to the brainstem
Which nerves merge together to supply taste to the tongue?
Chorda tympani and lingual nerve
What nerves are associated with sensory on the mandibular nerve?
Nervous spinosus, long buccal, mental, auriculotemporal
What muscles does brachial efferent go to?
4 muscles of mastication
Pre-ganglionic fibers (parasympathetic) go to which ganglion before entering the auricolutemporal
nerve?
Otic ganglion
Where do post-ganglionic sympathetic fibers that enter the auricolutemporal nerve come from?
Hop off of middle meningeal artery
In what location does the lingual nerve and lingual artery meet?
Oral cavity
Which arteries are parasympathetic fibers able to catch a ride on, to get to the lingual nerve?
Lingual and facial arteries
Trigeminal neuralgia is due to the compression of the trigeminal nerve by surrounding vessels.
Which vessels can cause this compression?
Superior petrosal vein, aberrant branch of the middle meningeal, superior cerebellar artery
How do parasympathetic impulses get to the lacrimal gland?
Super salvitory nucleus->facial nerve greater petrosal nerve
->pterygogoid canal -> pterygopalatine ganglion-> maxillary-> zygomatic->lacrimal gland
