Ear Anatomy and Physiology Flashcards

1
Q

What type of epithelium lines the pinna and external auditory canal?

A

Stratified keratinized epithelium

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

What are the three layers of the tympanic membrane?

A

Outer - Continuous with skin of the EAC
Middle - Fibrous
Inner - Respiratory epithelium (ciliated columnar with goblet cells)

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

Name the ossicles

A

Malleus, incus and stapes

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

What is the function of the ear ossicles?

A

They are important for sound conduction

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

What type of epithelium lines the middle ear?

A

Respiratory epithelium (same as tympanic membrane)

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

Where does the middle ear connect to outwith the ear?

A

Mastoid air cells and nasopharynx (via Eustachian tube)

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

What nerve runs through the middle ear?

A

Chorda tympani - Facial nerve

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

Which important structures surround the middle ear?

A

Middle cranial fossa, ICA, sigmoid sinus and internal jugular vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does the chorda tympani supply

A

Taste to anterior 2/3 of tongue

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

What are the possible complications of otitis media and cholesteatoma?

A

Spread into the meninges, middle cranial fossa, facial nerve, mastoid cavity, inner ear, sigmoid sinus and internal jugular vein

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

What is cholesteatoma?

A

Skin in the middle ear (congenital or acquired)

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

Which nerves innervate the ear?

A

Jacobsons (CrN IX) - sensation to middle ear
Arnolds (CrN X) - sensation to posterior 1/2 of EAC
Facial (CrN VII) - anterior 1/2 of EAC
CrN V3 - Pinna (upper half)
C2/3 - Pinna (lower half)

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

Which nerve runs in the inner ear?

A

Vestibulocochlear

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