Special senses: Hearing

Question 1

What receptor does hearing use?

Answer 1

Mechanical receptor

Question 2

What are the 3 parts of hearing?

Answer 2

External, middle, inner ear

Question 3

What are the 3 parts of the external ear?

Answer 3

Pinna, external auditory canal, tympanic membrane

Question 4

Pinna (auricle) shape

Answer 4

Funnel-like structure

Question 5

External auditory canal shape

Answer 5

S shaped tube

Question 6

Tympanic membrane (eardrum) shape

Answer 6

Cone shaped

Question 7

Function of Pinna (auricle)

Answer 7

Helps collect sound waves

Question 8

Function of external auditory canal

Answer 8

As sound waves enter, they change the pressure on the eardrum.

Question 9

Function of tympanic membrane (eardrum)

Answer 9

It receives sound vibrations from the extrenal ear and transmits them to the auditory ossicles.

Question 10

Function of ear lobe (lobule)

Answer 10

Completes formation of pinna (auricle)

Question 11

What is the middle ear?

Answer 11

Air-filled space in the temporal bone

Question 12

What is the main purpose of auditory ossicles?

Answer 12

To amplify the force of vibrations coming in and connects the outer and inner ear

Question 13

Function of auditory tube

Answer 13

Middle ear to pharynx; Help maintain equal pressure of both sides of eardrum

Question 14

What cranial nerve is tensor tympani muscle

Answer 14

Trigeminal nerve; chewing

Question 15

Function of malleus muscle

Answer 15

Handle-eardrum; Transmit/amplify vibrations to incus

Question 16

Function of incus muscle

Answer 16

Connects malleus to stapes; Transmits/amplify vibrations to stapes

Question 17

Function of stapes muscle

Answer 17

Base is in the oval window

Question 18

Function of oval windows

Answer 18

Deep to stapes; Vibrates from stapes to perilymph

Question 19

Function of cochlea

Answer 19

Hearing

Question 20

Function of vestibule

Answer 20

Equilibrium, static/linear acceleration

Question 21

Function of semicircular canal

Answer 21

Equilibrium, rotational acceleration

Question 22

What is labyrinth?

Answer 22

Complex system of communicating chambers

Question 22

What is osseous labyrinth

Answer 22

Bony canal in temporal bone

Question 23

What is important of cochlear duct?

Answer 23

Sound is interpreted and change to action potential

Question 24

What is stereocilia?

Answer 24

Are your sensory hair cells telling you can hear this

Question 25

Sensory neurons in the cochlear branch are what cranial nerve?

Answer 25

Vestibulocochlear