Ear quiz

Question 1

Collects and funnels sound waves towards the auditory canal

Answer 1

Pinna

Question 2

Connects the pinna to the ear drum. Is lined with ear wax

Answer 2

Auditory Canal

Question 3

Connect to middle ear to mouth/nose and allows for pressure equalisation

Answer 3

Eustachian tube

Question 4

Calcium carbonate granules that move in response to different head positions

Answer 4

Otoliths

Question 5

In response to the oval window being pushed in, the _____ bulges out to equalise pressure within the cochlea. Absorbs sound waves to prevent them from bouncing around (echoing)

Answer 5

Round window

Question 6

Detects sound waves and transfers them from the external ear to the middle ear. Converts sound waves into mechanical (physical) vibrations

Answer 6

Tympanic membrane (eardrum)

Question 7

Carry and amplify vibrations from the tympanic membrane to the oval window of the inner ear. 3 of them

Answer 7

Ossicles

Question 8

First ossicle

Answer 8

Hammer/malleus

Question 9

Second ossicle

Answer 9

Anvil/incus

Question 10

Third ossicle

Answer 10

Stirrup/Stapes

Question 11

Fluid filled structure that converts sound waves into nerve impulse

Answer 11

Cochlea

Question 12

organ of hearing that converts sound vibrations into nerve impulses

Answer 12

Organ of Corti

Question 13

Where the Stapes pushes the oval window inwards

Answer 13

Vestibule

Question 14

Floor of the organ of corti that oscillates in response to sound vibrations

Answer 14

Basilar membrane

Question 15

Located above the basilar membrane the stereo cilia bend when they come in contact with it.

Answer 15

Overlying membrane

Question 16

Embedded in the basilar membrane. When bent they send a nerve impulse to the organ of corti. Short stereo cilia=High frequency, long stereo cilia=Low frequency

Answer 16

Stereo cilia

Question 17

Detects stationary (static equilibrium) position of the head. Hair cells respond to change in heads position with respect to gravity and movement in one direction

Answer 17

Utricle and Saccule

Question 18

detects (motion of the body) dynamic equilibrium. Similar to the utricle and saccule but detect rotations in the the head.

Answer 18

Semicircular canals