Tympanic Membrane details Flashcards
1
Q
What are two functions of the tympanic membrane?
A
- Separates the outer ear and the middle ear
- Transduces acoustic pressure waves into mechanical vibrations of the ossicles in the middle ear
2
Q
What does the tympanic membrane look like? (healthy)
A
- Oval
- Smooth
- Pearly gray
- Partially translucent
- Cone shaped
3
Q
List the layers of the tympanic membrane.
A
- Outer layer
- Intermediate layer
- Inner layer
4
Q
Describe the outer layer of the tympanic membrane.
A
- Continuous with the epithelial lining of the external auditory meatus
5
Q
The intermediate layer of the tympanic membrane is made up of what?
A
- Radial and circular fibers that provide structure
6
Q
Describe the radial fibers of the intermediate layer of the tympanic membrane.
A
- Radiate from the center of the eardrum toward the periphery
7
Q
Describe the circular fibers of the intermediate layer of the tympanic membrane.
A
- Greater density toward the periphery and where the membrane attaches to the manubrium of the malleus
8
Q
Describe the inner layer of the tympanic membrane.
A
- Continuous with the mucosal lining of the middle ear
