Deck 3: Anatomy and Physiology of the Auditory and Vestibular Systems

Question 1

The most flexible and stiff regions of the tympanic membrane are called _______ and _________,respectively.

Answer 1

Pars flaccida

Question 2

Thin strands projecting from the apex the top)of hair cells are called _______________.

Answer 2

Stereocilia

Question 3

Communication between inner hair cells and auditory nerve fibers is by means of a ___________________.

Answer 3

Synapse

Question 4

The two windows leading into the inner ear are ___________________ and ___________________

Question 5

The three ossicles are called ________,________,and _________.

Question 6

The volume of the adult external ear canal is about ______ cc.

Question 7

The inner ear is located within the _________ bone.

Question 8

The three ducts or scala within the cochlea are the scala ________,scala _________,and scala _________.

Question 9

The main parts of the outer ear are ______ and ________.

Question 10

The highly metabolic structure forming the lateral wall of the cochlea is the stria __________________.

Question 11

The abbreviation "CPA" stands for ___________________.

Question 12

The hair cells and other important cochlear structures are found in the organ of __________.

Question 13

The technical term for a hole in the tympanic membrane is: ___________________.

Question 14

The lateral border of the middle ear space is formed by the ____________.

Question 15

The eighth cranial nerve is also known as the ____________ nerve.

Question 16

Two fluids in the cochlea are __________________ and __________________.

Question 17

Name at least four anatomical landmarks found in the middle ear space.

Question 18

State four specific locations of tonotopical organization within the auditory system: ___________________,___________________,___________________ ___________________

Question 19

The lightest bone in the human body is the ________.

Question 20

The process of determining the direction of sounds is called ________.

Question 21

Name two characteristics of a healthy normal tympanic membrane.

Question 22

What is the function of the middle ear?

Question 23

The Eustachian tube is normally open.
Short Answer

Question 24

Order the three middle ear ossicles from the lateral to the medial direction.

Question 25

The middle ear contains fluid,while the inner ear contains air.

Question 26

What are decussating pathways in the auditory system and why are they important in hearing?

Question 27

Name the main parts of the pinna.

Question 28

The primary auditory cortex is known as __________________ gyrus.

Question 29

An auditory structure in the thalamus is the: ______________________ body.

Question 30

Cerumen is produced by the pinna.

Question 31

List similarities and differences in the auditory system versus the vestibular system.

Question 32

List differences in the structure of outer versus inner hair cells.

Question 33

List similarities and differences in the function of outer versus inner hair cells.

Question 34

Identify at least five different centers in the central auditory nervous system.

Question 35

What is the function of the outer ear?

Question 36

There are active processes in the cochlea.

Question 37

What are the parts of the peripheral auditory system?

Question 38

The thickness of the normal tympanic membrane is about 0.1 mm.

Question 39

Descending pathways in the brain that lead out to the hair cells are called the ____________________ auditory system.

Question 40

How is intensity coded in function of the auditory nerve?