Special Senses- Hearing/Balance

Question 1

Auricle

Answer 1

Outside of ear

Question 2

External auditory canal

Answer 2

Lined with hairs and ceruminous glands that produce wax

Question 3

Tympanic membrane

Answer 3

Thin membrane of 2 layers of epithelium. Border between external and middle ear

Question 4

Ossicles

Answer 4

Malleus, Incus, Stapes. 3 bones in middle ear carry vibration from tympanic membrane to oval window

Question 5

Bony labyrinth

Answer 5

in temporal bone. allow auditory and vestibular nerves and accompanying blood vessels enter inner ear

Question 6

Eustachian tube

Answer 6

opens into pharynx equalizes air pressure

Question 7

Cochlea

Answer 7

hearing, full of fluid, sound vibration, electrical pulses

Question 8

Vestibule

Answer 8

balance, communicate; anteriorly with cochlea and superior with semi circles

Question 9

Semicircular canals

Answer 9

Balance; Allows brain to know which direction

Question 10

Membranous Labyrinth

Answer 10

contains the receptors for hearing and balance; chambers in the bony labyrinth

Question 11

Spiral organ

Answer 11

Contain sensory cells

Question 12

Hair cells

Answer 12

convert energy that is transmitted to the central nervous system via the auditory nerve

Question 13

Stereocillia

Answer 13

responding to fluid motion for various functions, including hearing and balance.

Question 14

Static Labyrinth

Answer 14

Evaluates position of head relative to gravity (walking)

Question 15

Dynamic Labyrinth

Answer 15

Movement of head in 3D space (turning)