Cranial Nerves Flashcards
Foramen: I
Cribiform plate
Foramen: II
Optic foramen
Foramen: III
Sup. orbital fissure
Foramen: IV
Sup. orbital fissure
Foramen: V
Ophthalmic- sub. orbital fissure
Maxillary- foramen rotundum
Mandibular- foramen ovale
Foramen: VI
Sup. orbital fissure
Foramen: VII
Internal auditory meatus
Foramen: VIII
Internal auditory meatus
Foramen: IX
Jugular foramen
Foramen: X
Jugular foramen
Foramen: XI
Foramen magnum and jugular foramen
Foramen: XII
hypoglossal canal
Component/ Main innervation: I
SVA
olfactory nasal mucosa (smell)
Component/ Main innervation: II
SSA
rods and cones of retina (vision)
Component/ Main innervation: III
- GVE
(via ciliary ganglion) to sphincter pupillae and ciliary muscles
- GSE
sup, med, and inf recticus and inferior oblique eye muscles and elevator palpebral superiors
Component/ Main innervation: IV
GSE
superior oblique eyeball muscle
Main innervation: V (GSA)
V1: skin of upper part of face (upper orbit and above)
V2: skin of mid face, upper teeth, nasal and palatal mucosa
V3: skin of lower face and jaw, floor of mouth, mucosa of anterior 2/3 tongue, lower teeth and gums, ear pinna and canal
Main innervation: V (SVE)
motor to muscles of mastication, anterior belly of digastr, tensor tympani, mylohyoid, tensor palatini
Component/ Main innervation: VI
GSE / abducens nucleus (pons) / motor to lateral recturs muscle (LR6)
Component/ Main innervation: VII
- GVA / deep sense soft palate
- SVA / taste buds from the an 2/3 of the tongue
- GSA / sens. from small part of ear pinna
- GVE / motor to submand, subling gls, lacrimal gls, glands in nasal mucosa
- SVE / motor to musc facial expressions, post belly diagast, stylohyoid, stapedius
Component/ Main innervation: VIII
SSA
a. cochlear nuclei / organ of certain cochlear duct
b. vestibular nuclei / semicircular canals, utricle, saccule
Component/ Main innervation: XII
GSE / intrinsic and extrinsic muscles of the tongue (palatoglossus excepted)
Component/ Main innervation: IX
- GVA / deep sens. post tongue, soft palate, pharynx, mucosa of tymp cavity, post auditory tube, carotid body and sinus
- SVA / taste buds post 1/3 of tongue and adjacent pharynx
- GSA / gen sens from small part of ear pinna and canal
- GVE / parotid salivaary gland (secretomotor)
- SVE / stylopharygeaus muscle
Component/ Main innervation: X
- GVA / visc. sens from pharynx, esoph, trachea, larynx, and abdom visc
- SVA / taste buds in epiglottis and glottis
- GSA / sens from small part of ear pinna, canal, and tymp membrane
- GVE / thoracic and abdominal viscera
- SVE / muscles of pharynx and larynx, lev. palatine and cricothyroid
