Organ of Corti Flashcards
1
Q
Function of the organ of Corti
A
- Sensory organ of hearing
2
Q
Where is the organ of Corti located (two details)?
A
- Located in the scala media (cochlear duct)
- Lies on top of the basilar membrane
3
Q
List the structures of the Organ of Corti.
A
- Outer hair cells
- Inner hair cells
- Stereocilia
- Tunnel of Corti
- Tectorial membrane
4
Q
Outer hair cells:
How many rows?
Location?
Shape?
A
- 3-5 rows
- On basilar membrane
- Cylinder shaped
5
Q
What is another name for stereocilia?
A
- sensory hairs
6
Q
How are the stereocilia of the outer hair cells anchored/attached?
A
- Anchored on top of cuticular plate
- Tips attached to the underside of the tectorial membrane
7
Q
What are the outer hairs supported by?
A
- Supported by Dieters, Claudius, and Hensen’s cells
(I didn’t hear her talk about this in the lecture, so I’ll look it up later.)
8
Q
Inner hair cells:
How many rows?
Location?
Shape?
A
- Single row
- On basilar membrane
- Tear-drop shaped
9
Q
How are the stereocilia of the inner hair cells anchored/arranged/attached?
A
- Anchored on top of the cuticular plate
- Arranged in 3 rows
- NOT embedded into the tectorial membrane
10
Q
How are inner hair cells supported?
A
- Embedded in a matrix of inner phalangeal cells for support
11
Q
What is the primary role of inner hair cells?
A
- Primary role of auditory signal transduction
