Organ of Corti #2 & Cochlear Fluids Flashcards
1
Q
Describe stereocilia.
A
- Graduated in length
- have tip links
2
Q
How do stereocilia tip links work?
A
- Connect shorter cilia to longer cilia
- Ensures that movement of one cilia moves the adjacent cilia
3
Q
What is the tunnel of
Corti?
A
- Space that separates the outer and inner pillar cells
4
Q
What/where is the tectorial membrane?
What is its function?
A
- Overlays the hair cells
-Tips of the outer hair cells are attached to the underside of the tectorial membrane - Helps process acoustic stimuli
5
Q
List the cochlear fluids.
A
- Perilymph
- Endolymph
- Cortilymph
6
Q
Perilymph is similar to ___________________ in composition.
A
- Cerebrospinal fluid
7
Q
What does perilymph fill?
A
- Fills in the scala vestibuli and scala tympani
- Also fills the space between the osseous portion and membranous portion of the vestibule and semicircular canals
8
Q
Endolymph is similar to _____________________ .
A
- Intracellular fluid
9
Q
What does endolymph fill?
A
- Fills the scala media (cochlear duct) and membranous portion of the vestibular system
10
Q
Cortilymph is similar to ____________________ .
A
- Cerebrospinal fluid (similar to perilymph)
11
Q
What does cortilymph fill?
A
- Fills the tunnel of Corti and around the base of hair cells in the cochlea
