Hearing anatomy

Question 1

What are the structures of the outer ear?

Answer 1

Auricle
Helix
Tragus
Lobule
Ear canal

Question 2

What are the structures of the middle ear?

Answer 2

Tympanic membrane
Ossicles - malleus, incus, and stapes
Tensor tympani
Stapedius
Eustachian tube

Question 3

What are the structures of the inner ear?

Answer 3

Vestibular apparatus
Cochlea - scala vestibuli, scala tympani, scala media (houses the organ corti).

Question 4

What is tonotopic organization and how is the cochlea organized?

Answer 4

The tonotopic organization is where different areas of the cochlea respond to different frequencies of sound.

Question 5

Where is the primary auditory cortex?

Answer 5

Temporal lobe and this is where the final process of hearing takes place.

Question 6

What does each part of a sound wave represent?

Answer 6

Amplitude determines its loudness. The length is the distance between two waves and affects the wave’s frequency (which determines the pitch sound)

Question 7

How is hearing loss catergorized?

Answer 7

Mild, moderate, severe, or profound