Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ENT > Ear Anatomy > Flashcards

Ear Anatomy Flashcards

1
Q

Name the 3 parts of the ear

A

external ear
middle ear
internal ear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the function of the external ear?

A

collects sound waves and directs it towards middle ear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the function of the middle ear?

A

conducts and amplifies vibrations towards inner ear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the function of the internal ear?

A

converts the vibration/movement of fluid into action potentials

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the special sensory functions of the ear?

A

hearing

balance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What structure connects the middle ear to the nasopharynx?

A

Eustachian tube

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the anastomosis in the brain called that leads to supply blood to the head and neck?

A

circle of Willis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the branches of the external carotid artery? proximal to distal…

A 
superior thyroid artery
ascending pharyngeal artery
lingual artery
facial artery
occipital artery
posterior auricular artery
maxillary artery
superficial temporal artery
(some anatomists like freaking out poor medical students)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What vein do the veins of the head and neck ultimately drain in to?

A

internal jugular vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What special sensory nerve aids hearing and balance?

A

CN VIII

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What special sensory nerve aids taste?

A

CN VII
CN IX
CN V3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What special sensory nerve aids smell and vision?

A

CN I

CN II

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is another name for the external ear?

A

pinna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is another name for the middle ear?

A

tympanic cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the 3 bones called in the tympanic cavity?

A

malleus
incus (anvil)
stapes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What happens to the ossicles as you go more medially into the ear?

A

they decrease in size to assist amplification

17
Q

What kind of joints are present between the ossicles?

A 
synovial joints
(smallest in body)
18
Q

What happens to the tympanic membrane when sound waves reach it?

A

it vibrates

19
Q

What muscle attaches to the malleus from the eustachian tube?

A

tensor tympani muscle

20
Q

what is the role of the tensor tympani muscle?

A

dampens sound by reducing the vibrations of the tympanic membrane

21
Q

what nerve innervates the tensor tympani muscle?

A

CN V3

22
Q

Where is the strapedius muscle?

A

from pyramidal eminence to neck of stapes

23
Q

What nerve innervates the strapedius muscle?

A

CN VII

24
Q

What happens if the atmospheric pressure is greater than the air pressure in the tympanic cavity?

A

tympanic membrane pushes IN

25
Q

What happens if the atmospheric pressure is smaller than the air pressure in the tympanic cavity?

A

tympanic membrane pushes OUT

26
Q

What general structure does the inner ear have?

A

dense and bony

27
Q

name the 2 labyrinths of the inner ear…

A

bony labyrinth

membranous labyrinth

28
Q

what does the bony labyrinth contain?

A

peri lymph

similar to ECF

29
Q

what does the membranous labyrinth contain?

A 
endo lymph
(similar to ICF)
30
Q

Describe the process of hearing…

A

1) sound waves making tympanic membrane vibrate
2) vibrations go through ossicles
3) stapes vibrates in oval window
4) creates pressure in peri lymph
5) hair cells in cochlea move
6) APs stimulated and conveyed to brain (cochlear nerve)
7) pressure waves descend and become vibrations
8) dampened at round window

31
Q

What cells detect auditory stimuli?

A

hair cells

32
Q

where are hair cells located?

A

basilar membrane of cochlear duct

33
Q

what suspends the cochlear duct?

A

scala vestibuli

scala tympani

34
Q

for balance, what detects angular movement change?

A

semicircular ducts

35
Q

for balance, what detects linear movement change?

A

urticle (horizontal)

saccule (verticle)

36
Q

what nerves pass through the internal acoustic meatus?

A 
CN VII (facial)
CN VIII (vestibulocochlear)
37
Q

What is the result of a dysfunctional facial nerve?

A

lack of taste on anterior 2/3 of tongue
facial paralysis (Bells palsy)
dry eye, mouth, mucosa

38
Q

What nerves supply the tongue?

A 
CN IX (glossopharyngeal) - posterior 1/3
CN V3 (trigeminal) - anterior 2/3
CN VII (facial) - anterior 2/3
39
Q

Name the types taste buds from anterior to posterior…

A

filiform
fungiform
foliate & vallate

ENT (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions