Special senses: Equilibrium

Question 1

Cochlea - cross section

Answer 1

Vibration comes through and influences the cochlear duct, and the hair cells get bent and influence the vibration and have it gone out the round window

Question 2

At rest what happens with ions?

Answer 2

About 10% of ion channels are open and no sound is present

Question 3

Sound travels at

Answer 3

331 m/sec

Question 4

Frequency (hertz)

Answer 4

Pitch, quality, intensity

Question 5

Where do we have magnification

Answer 5

Ossicles

Question 6

What is amplitude?

Answer 6

Loud and soft sounds

Question 7

What are static senses?

Answer 7

Sense position of head; maintain stability and posture when head is still (side to side)

Question 8

What are dynamic senses?

Answer 8

Sudden movement or rotation of head; aid in maintaining balance

Question 9

What is vestibule?

Answer 9

Fluid filled, bony chamber, equilibrium receptors

Question 10

Saccule is important for what?

Answer 10

Vertical movements

Question 11

Utricle is important for what?

Answer 11

Horizontal movements

Question 12

What is ampulla?

Answer 12

Houses sensory organs

Question 13

What is crista ampularis contain?

Answer 13

A number of sensory hair cells and supporting cells

Question 14

What is hearing loss?

Answer 14

Due to disease, damage or age related

Question 15

What is conduction deafness?

Answer 15

Prevention or blocking sounds from entering inner ear

Question 16

What is sensoneural deafness?

Answer 16

Damage to the neural structures

Question 17

What is tinnitus?

Answer 17

Ringing or clicking sound in the absence of auditory stimuli

Question 18

What is menieres syndrome?

Answer 18

Labyrinth disorder; effects both hearing and balance

Question 19

What is the weber test?

Answer 19

Ring tuning fork and place on center of head to hear in both ears

Question 20

What is the Rinne test?

Answer 20

Place tuning fork on the bone behind ear and move away till they can’t hear it

Question 21

What is the Bing test?

Answer 21

Same as Rinne except close the other ear canal

Question 22

What is sound location?

Answer 22

Move tuning fork around and have patient detect location

Question 23

What is postural reflex test?

Answer 23

Unexpected changes that move the body away from a state of balance

Question 24

What is Barany test?

Answer 24

Tests visual response to changes in dynamic equilibrium; spinning in a chair and seeing their eyes twitch

Question 25

What is the Romberg test?

Answer 25

Tests static equilibrium by standing with back to the wall