A&P - Chapter 24 (Part 2)

Question 1

How many auditory ossicle bones are there in the middle ear?

Answer 1

3

Question 2

What are the 3 auditory ossicle bones in the middle ear?

Answer 2

1. Malleus
   - hammer
2. Incus
   - anvil
3. Stapes
   - stirrup

Question 3

What is the tympanic membrane?

Answer 3

Ear drum

Question 4

Where does the middle ear end?

Answer 4

In the oval window

- opening into the ear

Question 5

What does the auditory (eustachian) tube connect?

Answer 5

The middle ear to the throat

Question 6

Otitis media

Answer 6

Middle ear infection

Question 7

What is the round window?

Answer 7

An opening into the inner ear

-covered by a membrane

Question 8

What does the inner ear contain?

Answer 8

Body labyrinth

Question 9

What does the body labyrinth surround?

Answer 9

A membranous labyrinth

Question 10

How many structures does the bony labyrinth consist of?

Answer 10

3

Question 11

What are the 3 structures that make up the bony labyrinth?

Answer 11

1. Vestibule
2. Semicircular canal
3. Cochlea

Question 12

What is the semicircular canal involved with?

Answer 12

Balance

Question 13

What is the cochlea involved with?

Answer 13

Hearing

Question 14

What does the membranous labyrinth contain?

Answer 14

2 membranous sacs

Question 15

What are the 2 membranous sacs found in the membranous labyrinth called?

Answer 15

1. Utricle

2. Saccule

Question 16

What are the 2 fluids found in the inner ear?

Answer 16

1. Perilymph

2. Endolymph `

Question 17

What is perilymph fluid similar to?

Answer 17

CSF

- cerebrospinal fluid

Question 18

Where is perilymph located?

Answer 18

Inside the bony labyrinth

Question 19

What does perilymph do?

Answer 19

It fills the space between the membranous labyrinth and the body labyrinth (around the membranous labyrinth)
- peri = around

Question 20

Where is the endolymph located?

Answer 20

Inside the membranous labyrinth

Question 21

Endolymph

Answer 21

Is a clear fluid

Question 22

What is endolymph fluid rich with?

Answer 22

Potassium

Question 23

Organ of corti

Answer 23

Specialized hair cells on a structure

Question 24

Where do you find organ of corti?

Answer 24

In the cochlear duct

Question 25

When do organ of corti respond?

Answer 25

When they are bent by the movement of surrounding endolymph set in motion by sound waves