Ear Parts

Question 1

Pinna

Answer 1

The shell-shaped structure surrounding the auditory canal opening.

Question 2

External acoustic meatus

Answer 2

Short, narrow chamber carved into the temporal bone.

Question 3

Eardrum

Answer 3

Vibrates from sound waves, passed vibrations.

Question 4

Middle ear

Answer 4

Small, air-filled cavity within the temporal bone.

Question 5

Pharyngotympanic tube

Answer 5

Equalizes pressure.

Question 6

Ossicles

Answer 6

3 smallest vines in the body; transmit vibrations from the eardrum.

Question 7

Malleus (hammer)

Answer 7

Moved with the eardrum.

Question 8

Anvil (incus)

Answer 8

Passed vibrations from malleus to stapes.

Question 9

Stapes (stirrup)

Answer 9

Pressed on the oval window.

Question 10

Inner ear

Answer 10

Includes sense organs for hearing and balance.

Question 11

Mechanoreceptors

Answer 11

Hair cells (sense hearing).

Question 12

Cochlea

Answer 12

Stapes transmits vibrations, perilymph fluid moves, bends hair cells.

Question 13

Vestibule

Answer 13

Balance; located between the semicircular canals and the cochlea.

Question 14

Semicircular canals

Answer 14

Houses the dynamic equilibrium receptors to respond to angular rotary head movements.

Question 15

Static equilibrium

Answer 15

Help with the orientation of the head.

Question 16

Dynamic equilibrium

Answer 16

Respond to angular and rotary movements of the head.

Question 17

Vestibulocochlear nerve

Answer 17

Takes information to the brain.

Question 18

Sensorineural deafness

Answer 18

Damage to receptor cells in cochlea.

Question 19

Conduction deafness

Answer 19

Something interferes with vibrations in the ear.

Question 20

Chemoreceptors

Answer 20

Receptors for taste and olfaction (smell); respond to chemicals dissolved in solution.

Question 21

Olfactory receptors

Answer 21

Receptors for sense of smell.

Question 22

Outer ear

Answer 22

Composed of the pinna and the external acoustic meatus