Tympanic Membrane Landmarks Flashcards
1
Q
Label the Diagram
A
2
Q
Detail, function, and location detail for the Umbo
A
- Point of attachment of the center of the tympanic membrane with the manubrium
- Draws the tympanic membrane inward, forming a cone shape
- Location from which the cone of light radiates
3
Q
Describe the Malleolar stria.
A
- Opaque, whitish streak where the manubrium of the malleus is embedded into the tympanic membrane
4
Q
Describe the Cone of Light.
A
- Bright region of reflected light from an otoscope arising from the tautness of the membrane
5
Q
Describe the Anterior and Posterior Malleolar Folds.
A
- Ligament bands that course laterally from both sides of the malleolar prominence, forming a triangular area know as pars flaccida
6
Q
What is the pars flaccida?
A
- A flaccid portion of the tympanic membrane in the superior region
- Formed by the malleolar folds
7
Q
What is the pars tensa?
A
- The remaining more fibrous portion of the tympanic membrane
- The part of the tympanic membrane that is NOT the pars flaccida
8
Q
Detail about the long crus of the incus
A
- Can occasionally be seen through the tympanic membrane
9
Q
Location details for Malleolar Prominence
A
- Formed by the attachment of the lateral process of the malleus to the eardrum
- Located at the upper end of the malleolar stria
10
Q
Label the diagram
A
