Crainal Nerves Of The Brain

Front 1

Olfactory nerve

Back 1

-olfactory epithellium
-carry impulses for sense of smell
-ansumiu:fracture of the ethmoid bone may lead to loss of smell

Front 2

optic

Back 2

-all sense regions in head from resting eye
-carrying impulses from vision
-anopsias:damage the optic nerve or to vision pathway leads to total sight loss

Front 3

ocuiomotor

Back 3

-supplies 4 extensmic eye muscles that move eyeball in orbit
-testing:examination of size, shape, quality

Front 4

Trochear

Back 4

-in nerves intrinristic eye muscle loops through pulley shaped ligament in orbits
-trama results in doule vision; reduced rotation

Front 5

trigemnas

Back 5

-fibers to face& motor; fibers to chewing mucles
-largest
-douloranx:caused be inflimation of trigimnal nerve:provked by sensory stimuli puts pressure on the trigemnal nerve

Front 6

abducent

Back 6

-controls extremtic eye
-muscle, then turns the eye laterally

Front 7

facial

Back 7

-facial expression
-bells palsy:paralysis of facial mucles
-caused by herpes symplex 1 infection

Front 8

vestibulocochlear

Back 8

-hearing and balance
-fibers from hearing and equilibrum apparatis fo inner ear and puss through asccitic makes to enter the brain

Front 9

branches of vestibulocochlear

Back 9

vestibular:
-sense of equibrium
-damage: deathness
-vestibular, dizziness rapid movement

Front 10

glossopharyhgeal

Back 10

-emerge the medius and leave skull via the juglar foraman to run to throat
-tounge and pharynx damage impairs swallowing and taste

Front 11

vagus

Back 11

-throat and dbdomen
-parasymatic effective
-heart and lungs
-regulation of heart rate, breathing, digestive activity
-damage:hoarsness, swallowing, destroys body

Front 12

accessory

Back 12

-accessory nerve of vagus
-cranial root from lateral a speer of medulia
-spinal root motor nerves; to trapizeius
sternally: madulla muscle
injury:spial roots head to turn toward injured side

Front 13

hypoglossal

Back 13

-tounge never of vagus
-tounge and inesting moving
-motor function
-food micing; speech
damage: difficulty in speech and swallowing