trigeminal N Flashcards
somatosensory ant 1/2 of head innervates 8m. inc all 4 muscles of mastication
trigeminal N
what are the 3 main divisions of the trigeminal N
V1- ophthalmic
V2- maxillary
V3- mandibular
where does the trigeminal N orginate
brainstem in the post cranial fossa
where is the trigeminal ganglion
in the middle cranial fossa
what does the V1-ophthalmic N pass through
sup orbital fissure
what does the V2 -maxillary N pass through
foramen rotundum
what does the V3- mandibular N pass through
foramen ovale
1st deg branch of V1 ophthalmic that supplies the supraorbital and supratrochlear N
frontal N
name 2 of the branches of the nasociliary N we need to know
external nasal branch of the ant ethmoidal N, intratrochlear N
1 deg branch of the ophthalmic N. V1 supplies the lacrimal sys
lacrimal N
originates within middle cranial fossa- subserves dura mater
tentorial N
originates within the sup orbital fissure or within the orbit subserves forehead
frontal N
originates within the sup. orbital fissure or within the orbit -
nasociliary
originates within the sup orbital fissure or within the orbit - subserves skin sup/lat rim of orbit and tear gland
lacrimal N
cutaneous sensation from upper cheek, lip, teeth, nasal cavity, palate
V2 division of the trigeminal N - maxillary
1st deg branches of the maxillary N
zygomaticalfacial, zygomatical temporal, infraorbital
originates within the middle cranial fossa- subserves dura mater
meningeal branch of the maxillary N.
originate within orbit gives rise to zygomaticotemporal and zygomaticofacial N
zygomatic N
originates within the infratemporal fossa- reenters middle cranial fossa through foramen spinosum- innervates dura mater of middle cranial fossa
meningeal branch of the mandibular N
what is the only branch of the trigeminal that is motor
mandibular - 4 m. of mastication
