Peripheral Nervous System

Front 1

CN origins / terminations:

cerebrum:
diencephalon:
mesencephalon:
pons:
medulla:

Back 1

cerebrum: I
diencephalon: II
mesencephalon: III, IV
pons: V-VIII
medulla:IX -XII

Front 2

olfactory nerve
CN __
sensory or motor?
inserts where

Back 2

CN _I_
sensory
inserts telencephalon

Front 3

optic nerve
CN __
sensory or motor?
inserts where

Back 3

CN _II_
sensory
inserts diencephalon

Front 4

oculomotor
CN __
sensory or motor?
inserts where

Back 4

CN _III_
motor
inserts mesencephalon

Front 5

trochlear
CN __
sensory or motor?
inserts where

Back 5

CN _IV_
motor
inserts mesencephalon

Front 6

which CN insert into mesencephalon

Back 6

III (oculomotor) and IV (trochlear)

Front 7

which CN insert into the pons?

Back 7

V (trigeminal)
VI (abducens)
VII (facial)
VIII (vestibulocochlear)

mixed motor and sensory

Front 8

trochlear nerve
CN __
sensory or motor?
inserts where

Back 8

CN _IV_
motor
inserts mesencephalon

Front 9

trigeminal nerve
CN __
sensory or motor?
inserts where

Back 9

CN _V_
both sensory AND motor
inserts pons

Front 10

abducens
CN __
sensory or motor?
inserts where

Back 10

CN _VI_
motor
inserts pons

Front 11

facial nerve
CN __
sensory or motor?
inserts where

Back 11

CN VII
both sensory AND motor
inserts pons

Front 12

vestibulocochlear nerve
CN __
sensory or motor?
inserts where

Back 12

CN _VIII_
sensory
inserts pons

Front 13

glossopharyngeal nerve
CN __
sensory or motor?
inserts where

Back 13

CN _IX_
both sensory AND motor
inserts medulla

Front 14

vagus
CN __
sensory or motor?
inserts where

Back 14

CN _X_
Both sensory AND motor
inserts medulla

Front 15

accessory nerve
CN __
sensory or motor?
inserts where

Back 15

CN _XI_
motor
inserts medulla

Front 16

hypoglossal nerve
CN __
sensory or motor?
inserts where

Back 16

CN _XII_
motor
inserts medulla

Front 17

which CN have both sensory and motor functions?

Back 17

5, 7, 9, 10

Front 18

which is the only CN that inserts directly into the telencephalon without going through the thalamus

Back 18

olfactory
inserts into the olfactory bulbs where synapses are made and then the primary olfactory area in the temporal lobe

Front 19

what's the primary function of the olfactory nerve

Back 19

smell

Front 20

CN I
origin
destination

Back 20

olfactory nerve

origin - receptors of olfactory epithelium

destination - olfactory bulbs where synapses are made and then to the primary olfactory area in the temporal lobe

Front 21

CN II
origin
destination

Back 21

optic
origin - retinas of eye
destination - LGN of thalamus, by way of the optic chiasm. at chiasm fibers from the medial half of each retina cross and join the lateal fibers of the contralateral side from the LGN, where synapsing occurs, the optic projectoin fibers proceed to the visual cortex

destination - DIENCEPHALON

Front 22

pituitary tumor / lesion to the optic chiasm

Back 22

dark light light dark

Front 23

lesion to optic tract

Back 23

dark light dark light
light dark light dark

Front 24

CN III
origin
destination

Back 24

oculomotor
origin - mesencephalon
destination - somatic motor - innervation to extrinsic eye muscles EXCEPT superior oblique and lateral rectus

Front 25

CN IV
origin
destination

Back 25

trochlear
origin - mesencephalon
destination - somatic motor - SO muscles of the ey

Front 26

V
sensory
1.
2.
3.
motor
1.

Back 26

Trigeminal

sensory - cell bodies located in the semiluncar or trigeminal ganglion
1. opthalmic - sensory impulses from eye and orbit, skin of nose, forehead, and front of scalp
2. maxillary- sensory from lower eyelid, upper lip, cheek, and nasal mucosa, upper gums and palate

3. mandibular- sensory from temporal region, tongue, lower teeth and gums and skin of chin and lower jaw.


motor
1. mandibular - somatic motor from the pons to muscles of mastication

Front 27

which CN has its cell bodies located in the semilunar or trigeminal ganglion

Back 27

sensory V trigeminal

Front 28

CN VI
origin
destinatin
primary function

Back 28

abducens
origin - pons
destinatin - LR muscle

abducts the eye

Front 29

CN VII
sensory

motor

Back 29

facial

sensory - cell bodies located in the geniculate ganglion
origin - taste receptors on anterior 2/3 of tongue
destination - sensory nuclei of pons
primary function - taste from anterior tongue

motor
1.somatic motor: nuclei of pons to muscles of facial expression
2. visceral motor: nuclei of pons to innervate the lacrimal gland and nasal mucous glands via the sphenopalatine ganglion; submandibular and sublingual glands via submandibular ganglion
primary fucntion: sensory from tongue, motor to muscles of facial expressoin, autonomic nmotor function to tear, nasal and salivary glands

Front 30

semilunar/trigeminal ganglion --> CN __

genicular ganglion --> CN __

Back 30

V trigeminal

VII facial

both sensory and motor

Front 31

vestibulocochlear

Back 31

sensory
1. cochlear nerve arises from receptors in teh cochlea that monitor mechanical disturbances form sound waves. cell bodies are located within a peripheral ganglion
2. vestibular nerve arises from receptors within the vestibule and semicircular canals. the neurosn are located in an adjacent ganglion

destination - axons pass on to the vestibular and cochlear nuclei of the pons and medulla.

hearing and balance

Front 32

glossopharyngeal
sensory
motor
function

Back 32

CN IX glossopharyngeal
sensory: arise from posterior 1/3 of tongue, pharynx, palate, and carotic sinus receptors wtih sensory neurosnm in the superior an dinferior ganglia. they travel on to the medulla

motor
1. somatic; from the medulla, control pharyngeal muscles involved in swallowing
2. autonomic: motor impulses from medulla innervate the parotid salivary gland after synapsing in the otic ganglion

primary function: sensory from tongue, palate, and carotid arteries; somatic innervation for swallowing and visceral innervation of the partoid gland.

Front 33

vagus
sensory
motors

Back 33

CN X
sensory: from part of pharynx, pinna of ear, external auditory canal, diaphragm, and visceral organs in the thoracic and abdominopelvic cavities. sensory neurons are located in jugular ganglion and the nodose ganglion and synapse in the medulla

motor:
1. someatic motor: muscles of pharynx for swallowing and larrynx for vocalization
2. autonomic: motor impulses from medulla proceed ot visceral organs muscles as far as the distal colon.

motor

mixed functions

Front 34

CN XI

Back 34

accessory nerve
motor
1. bulbar root: arises within medulla, passes through jugular foramen with the vagus nerve, and innervates the skeletal muscles of the soft palate, pharynx, and larynx
2. spinal root arises from the 1st 5 segments of the spinal cord, passes through the foramen magnum where it joins the bulbar root and passes through the jugular foramen. it innervates the sternocleidomastoid and trapezius muscles.

motor to pharynx, larynx and neck muscles

Front 35

CN XII

Back 35

hypoglossal

arise from medulla
innervates extrinsic an dintrinsic muscles of tongue

motor tongue movements

Front 36

ANS does what

Back 36

part of peripheral nervous system
innervates viscera
innervates SM of blood vessels and organs
innervates cardiac muscle
innervates gland of the body

neurosn of the ANS
1. preganglionic neurons from SC to peripheral ganglion where synapse with postganglionic neurons.
postganglionic neurons begin in the ganglion where they have their cell bodies and run to the ffector wher they are not myelinated
peripheral ganglia allow the preganglionic neurosn to synapse with mny postganglionic neurons and control more effectors - muscles or glands

Front 37

which are myelinated and which are nonmyelinated neurons

Back 37

preganglionic myelinated

postganglionic non-myelinated

Front 38

all preganglonic sympathetic fibers originate in teh SC segments ___

Back 38

T1- L2

Front 39

all preganglionic parasympathetic fibers originate in

Back 39

the brainstem or the sacral part of the SC

craniosacral division

Front 40

ANS controls

Back 40

secretory glands: sweat, lacrimal, salivary, adrenal medulla
cardiac muscle
SM of digestive tract, BV, bronchi of lungs, bladder, uterus, ducts, etc.

Front 41

what controls the ANS

Back 41

HT

Front 42

SNS / thoracolumbar

____preganglionic fibers
____postganglionic fibers

Back 42

output through thoracic and lumbar nerves of spinal cord

__short__preganglionic fibers
__long___postganglionic fibers

Front 43

PNS / craniosacral

____preganglionic fibers
____postganglionic fibers

Back 43

long pre

short post