H&n Cn V

Front 1

Resident Fiber modalities of CN V
- V1
- V2
- V3

Acquired Fibers

Back 1

V1:
- resident: GSA
- acquired: GVE (psns/sns)

V2:
- resident: GSA
- aqcuired: GVE (psns/sns), SA

V3:
- resident: SVE, GSA
- acquired: (psns/sns) SA


GSA: pain, touch...
SVE: muscles of 1st pharyngeal arch (mastication)

acquired: GVE: PSNS/SNS to glands, smooth muscle
SA: taste

Front 2

location of trigeminal ganglion

Back 2

Meckel's cave in the middle cranial fossa

Front 3

path of trigeminal nerve

Back 3

- emerges from brainstem, goes anterior to middle cranial fossa

- splits into 3

- V1,V2 pass through cavernous sinus

- V1: superior orbital fissure
- V2: foramen rotundum
- V3: foramen ovale

Front 4

path of V1
branches of V1
- and sub-branches

Back 4

OPHTHALMIC
travel towards sup orbital fissure

BRANCH BEFORE TRAVERSING THE FISSURE

meningeal (immediate) to tentorium
frontal
- supraorbital
- supratrochlear
lacrimal
nasociliary
- sensory -> ciliary ganglion -> short ciliary
- long ciliary
- post ethmoidal
- ant ethmoidal -> int/ext nasal branches
- infratrochlear

Front 5

function of V1 branches
- meningeal branch

Back 5

GSA

carries sensory info from tentorium cerebelli

Front 6

pathway of frontal nerve

Back 6

within orbit, branches into:
supratrochlear
supraorbital

go anteriorly and emerge from orbit with same-named arteries

Front 7

pathway of lacrimal nerve
- function

Back 7

travels along lateral border of eye

reaches the lacrimal gland and lateral eye

Front 8

pathway of nasociliary nerve and branches

Back 8

travels deep to lacrimal and frontal nerves

branches
- sensory: travels to ciliary ganglion
- short ciliary: from ciliary to globe
- long ciliary: straight from nasociliary to globe
- post ethmoidal: through post ethmoidal foramen
- ant: through ant ethmoidal foramen and branches into int/ext
- infratrochlear

Front 9

V1 GSA circuit

Back 9

- meningeal branch: tentorium cerebelli

- lacrimal: lat. upper eyelid, conjunctiva

- frontal:
supratrochlear: med sup eyelid, conjunctiva, lower glabella

supraorbital: med sup eyelid, conjunctiva, upper glabella, frontal sinus

- nasociliary:
short/long ciliary n: sclera, iris, cornea...

post eth: sph sinus, post eth sinus

ant eth: ant/middle eth sinus

int nasal: nasal mucosa
ext nasal: dorsum/tip of nose