NS-Spinal Cord Quiz

Question 1

olfactory nerve (1)

Answer 1

function: sensory nerve of smell
test: sniff aromas
problems: anosmia=partial loss of smell or all

Question 2

optic nerve (2)

Answer 2

function: allows you to see
test: finger=visual field test
eye chart opthalmoscope
problem: anopsias-visual defect
blindness-optic nerve damage partial blindness damage to optic chiasma

Question 3

oculomotor nerve (3)

Answer 3

function: stimulates 4 out of 6 eye muscles, helps pupil to constrict
test: papillary reflex (light), follow up, down, side-to-side
problem: nerve paralysis strabismus at rest–>eye rotates laterally

Question 4

trochlear nerve(“pulley”) (4)

Answer 4

function: motor fibers to superior oblique eye muscle, moves superior oblique muscle of eye
test: papillary reflex (light), follow up, down, side-to-side
problem: double vision

Question 5

trigeminal nerve(“3 fold”) (5)

Answer 5

function: sensory fibers for face chewing muscle, pons to face (3) 1)opthalmic-anterior scalp, upper eyelid, nose muscosa, cornea 2)maxillary-palate, upper teeth, skin of cheek 3)mandible-anterior tongue, lower teeth
test: cold pain touch with oins, corneal reflex with cotten ball, open mouth-resistance and jaw movement
problem: “tic-dou-laureau”=stabbing pain 100x a day, triggered by brushing your teeth

Question 6

abduceus nerve (6)

Answer 6

function: extrensic eye muscle-turn eye laterally
test: follow eye laterally
problem: internal strabismas=eye, medial (can’t move laterally)

Question 7

facial nerve (7)

Answer 7

function: chief motor muscle of face-temporal, sygomatic, buccal, mandible, cervical stim: tears, taste buds, salivary glands
test: taste swatch, close eyes, smile, whistle
problem: Bells Palsy: paralysis of facial muscles, partial loss of taste, lower eye lid droops and mouth sags

Question 8

vestibulocochelar nerve (8)

Answer 8

function: hearing (cohelar), balance (vestibular)
test: hearing checked with ear, tuning fork (bone conduction)
problem: lesions of cochelar nerve=nerve deafness, vestibular reagion dizziness, rapid involuntary eye movement, loss of balance, nausea, vomiting

Question 9

glossopharyngeal nerve (9)

Answer 9

function: stimulate muscles for reflex swallowing, gag reflex, taste buds, posterior tongue
test: test gag reflex, swallowing, speak/cough, post tongue taste
problems: damage-affects swallowing and taste (bitter/sweet)

Question 10

vagus nerve (“wanderer”) (10)

Answer 10

function: parasympathetic-motor fibers to heart, lungs, stomach, liver, kidneys, pharynx, larynx, moves food in digestive tract, regulates heart activity
test: test gag reflex, swallowing, speak/cough, post tongue taste
problems: nerve paralysis, hoarseness of voice, paralysis of this=death

Question 11

accessory nerve (11)

Answer 11

function: activates sternocleidomastoid and trapez, moves the muscles to allow you to move head/neck
test: roates head, srug shoulders
problems: sternocleidomastoid paralysis=no sohulder shrug (turns toward damages side)

Question 12

hypoglossal nerve (12)

Answer 12

function: tongue movement
test: stick out your tongue (goes to side=problem)
problem: damage= diff in speaking and swallowing

Question 13

spinal cord

Answer 13

• From medulla oblongata to T12
• Below T12=cauda equina (many spinal nerves)
• Enlargements in cervical and lumbar regions

Question 14

Anatomy of Spinal Cord

Answer 14

• Think consistency of string cheese
• Exterior white matter=conduction tracts
• Internal gray matter=mostly cell bodies
• central canal filled with cerebral spinal fluid
• meninges covering

Question 15

two types of gray matter in spinal cord

Answer 15

• dorsal horn=posterior

- ventral horn=anterior

Question 16

Classification of Nerves:

Answer 16

• Sensory=Carry impulses to CNS
• Motor=Carry impulses away from CNS
• Mixed=Both sensory and motor, all spinal nerves

Question 17

Cranial Nerves

Answer 17

• 12 pairs
• Numbered in order, front to back
• Three are sensory only, rest are mixed