Vestibular diseases

Question 1

what do vestibular systems do

Answer 1

postural stability
gase stabiltiy
resolution of sensory conflict

Question 2

vestibular system

Answer 2

detect forces created by gravity as we move

Question 3

vestibular disorder causes

Answer 3

abnormal sense of movement
visual instability
loss of balance

Question 4

T/F vestibular info must be integrated w vision and postural control

Answer 4

yes

Question 5

why dizziness with age

Answer 5

hair cell lose

neuronal loss in vestibular nuclei

Question 6

5 lesions associate with vestibular dysfunction

Answer 6

vestibular end organ
vestibular nerve terminals (8)
cerebellopontine 
brainstem / cerebellum
projections to cortex

Question 7

endolymph

Answer 7

fluid movement in opposite direction of head

Question 8

saccule

Answer 8

linear translation (up down)

Question 9

utricle

Answer 9

tilt , acceleration

Question 10

ampulla directing movement

Answer 10

deflect away from direction b/c of end

Question 11

what determines rate of vestibular nerve

Answer 11

speed and direction of ampulla

Question 12

semicircular canals

Answer 12

allow 3d head motion

each moves in a plane

Question 13

otolith function

Answer 13

detect acc /dec

gravitational pull

Question 14

what detects sagital plane motion

Answer 14

saccule

Question 15

what detects horizontal motion

Answer 15

utricle

Question 16

vertigo

Answer 16

hallucination of motion

Question 17

cardinal symptom of vestbular system disease

Answer 17

vertigo

Question 18

imbalance

Answer 18

inability to orient body in space

chronic vestibular or neurological disease

Question 19

disequilirbum

Answer 19

feel drunk disoriented

vestibular, metabolic or multi sensory

Question 20

lightheadness

Answer 20

can be cardiovascular or metabolic

Question 21

VOR

Answer 21

when your head moves on way but eyes don’t

Question 22

3 vestibular spinal reflex patwahys

Answer 22

lateral vestibulospinal
medial vestibulospinal
reticulospinal

Question 23

lateral vestibulospinal

Answer 23

info rom otoliths / cerebellum

lower extremity posture in response to head position

Question 24

medial vestibulospinal

Answer 24

info from semicircular canals

postural respond to angular changes

Question 25

reticulospinal tract

Answer 25

from vestibular nuclei

maintain balance

Question 26

automatic posture controlled by

Answer 26

lateral vestibulospinal
medial vestibulospinal
reticulospinal

Question 27

vestibular symptoms

Answer 27

change in hearing
dizziness
vertigo
light headed
oscillopsia

Question 28

oscillopsia

Answer 28

visual distortion

Question 29

continuous vertigo

Answer 29

acute unilateral loss of vestibular function
ataxic gait
resolve in few days

Question 30

benign paroxysmal positional vertigo

Answer 30

episodic vertigo

increase in fluid pressure in labytinth
head motion lying down

Question 31

treatment benign paroxysmal positional vertigo

Answer 31

habituation

canalith repositioning

Question 32

vestibular neuronitis

Answer 32

viral infection

solves 6 weeks - 3 months

Question 33

menieres syndrome

Answer 33

over accumulation of endolymph
episodic verge, tinnitus, hearing los
british

Question 34

treatment menieres syndrome

Answer 34

diuretics
histamine
corticosteroids

Question 35

acoustic neuroma

Answer 35

intracranial tumour of myelin forming cells

Question 36

AKA acoustic neuroma

Answer 36

vestibular schwannoma

Question 37

central vestibular loss

Answer 37

vascular events
TBI
brain tumour 
MS 
stroke