cranial nerves

general

100

this is the number of pairs of cranial nerves and the order in which they are numbered

12

numbered anterior to posterior 

200

all of the cranial nerves arise from the brain, except for this specific one

cranial nerve XI (11) 

300

_(1)_ pair(s) arise from the cerebrum, _(2)_ pair(s) arise from the diencephalon, _(3)_ pair(s) arise from the brainstem, and _(4)_ pairs arise from the spinal cord

one cerebrum

one diencephalon

nine brainstem

one spinal cord

400

all somatic motor nerves have a sensory component for this process.

proprioception - gives brain info. about tension/position about certain parts of the body

500

cranial nerves XI and XII and their respective origins and functions 

CN XI = accessory nerve, originates in spinal cord and medulla oblongata, motor - head movements 

CN XII = hypoglossal nerve, originates in medulla oblongata, motor - speech/swallowing 

nerve number/name/origin

100

the name and origin of cranial nerve VI

abducens nerve 

originates in the posterior pons (brainstem) 

200

cranial nerve VIII 

vestibulocochlear nerve 

originates in the posterior pons (brainstem) 

300

this is the first pair of cranial nerves

olfactory nerve

originates in cerebrum

400

cranial nerve X and its origin

vagus nerve 

originates in the medulla oblongata (brainstem) 

500

this is the third pair of cranial nerves (CN III) 

and where it originates

oculomotor (III) 

brainstem

nerve number/name/origin

100

the optic nerve is numbered _(1)_ and originates here (2)

optic nerve is CN II 

originates in diencephalon

200

cranial nerve IX and its origin

glossopharyngeal nerve 

originates in the medulla oblongata (brainstem) 

300

The trochlear nerve and its origin

IV 

originates in the midbrain (brainstem)

400

name of cranial nerve VII and origin

facial nerve 

originates in posterior pons (brainstem) 

500

this is the fifth (V) cranial nerve

trigeminal nerve 

originates in the midbrain (brainstem) 

general nerve function + motor/sensory/both

100

cranial nerve I

(olfactory)

smell

sensory

200

function of cranial nerve IV

(trochlear nerve) 

motor

movement of the eyeball by innervating one muscle (superior oblique muscle) in the eye

300

this nerve's function is vision (1)

it is only a ___ nerve (2)

cranial nerve II (optic)

sensory

400

function of CN VII

(facial nerve)

both sensory and motor

sensory - taste 

motor - facial expression 

parasympathetic motor - salivary/lacrimal glands 

500

functions of the vagus nerve

(X) 

both sensory and motor 

sensory - BP/blood gases, taste 

motor - voice production, swallowing 

parasympathetic motor - GI control, respiration, lowering HR 

general nerve function + motor/sensory/both

100

function of the vestibulocochlear nerve

(CN VIII) 

sensory - hearing and balance 

200

general function of the occulomotor nerve (III) 

motor

somatic motor = movements of eyeball and upper eyelid

parasympathetic motor = pupil constriction, muscles to focus lens

300

functions of cranial nerve IX

(glossopharyngeal nerve) 

both sensory and motor 

sensory - taste, monitor swallowing muscles, blood pressure, blood gases 

motor - swallowing 

parasympathetic motor - parotid gland (produce saliva) 

400

function of the abducens nerve 

(CN VI)

motor

lateral movement of the eyeball

500

the trigeminal nerve (CN V) has these functions

both motor and sensory 

has 3 branches:

ophthalmic (sensory) - upper facial structures

maxillary (sensory) - middle face structures (cheel and upper lip)

mandibular - (sensory) lower facial structures and anterior to ear, (motor) mastication/chewing muscles