Maculae and Static Equilibrium Flashcards
0
Q
What do the Maculae do?
A
They monitor the static position of the head in space (posture)
1
Q
Where are Maculae located?
A
One in each saccule
One in each utricle wall
2
Q
Can the Maculae respond to rotation forces?
A
No
3
Q
Can the Maculae respond to linear forces?
A
Yes
4
Q
What are the supporting cells of the Maculae?
A
Stereocilia
Single kinocillium
- both embedded in the otolithic membrane
5
Q
What is the Otolithic membrane?
A
Gel-like mass studded with tiny CaCO3 stones = otoliths
6
Q
What is the purpose of Otoliths?
A
They add weight to the gel membrane so that it shifts along the surface of the hair cells with positional changes.
7
Q
What do Maculae in the Utricle respond to?
A
Horizontal movement
8
Q
What do Maculae in the Saccule respond to?
A
Vertical movement
