2.5 Flashcards
What molecules does endolymph have a high concentration of
K+
What two structures give info about linear acceleration
Utrical and Saccule
What structure gives info about rotational acceleration
Semicircular canal
What gravity liner or rotational acceleration
Linear acceleration
Where do first order neurons have their cell bodies
In scarpis
Which cranial nerve is associated with cochlear nerve
Cranial nerve 8
Which hair cells are longer stereocilia or kinocilium
Kinocilium
What concentration does Paralymph have
A normal concentration of K+ (low concentration)
What are the two structures associated with the otolymph organ
Utricle and Saccule
What’s the orientation of the utricle
Sense of horizontal plane motion and frontal plane motion
What’s the orientation of the Sacculus
Senses up and down acceleration and the Sagittal plane
When happens when hair cells are depolarized
They release neurotransmitters
What is the otoconia
Are calcium carbonate crystal which do not move with movement of the otolithic membrane
What type of motion does the semicircular canal sense
Rotational motion
When you move your head which way does the capula move
In the opposite direction
Where is the cupua
In the ampulla
What’s the characteristic of vestibular ocular reflex
Stabilizes eye
Which way does your eyes move when your head rotates
In the opposite direction
True or false
Endolymph stops moving when motion stops
False
It keeps moving
When your head goes one way which way does endolymph go
The opposite way
What happens if endolymph and your head move in the same direction
It does not seem like you are moving
When you are at a constant velocity will your vestibular system sense it?
No
When you accelerate will your vestibular system sense it
Yes
What does vestibular reflex allows us to do
To maintain orientation to the environment while moving our head
What is the vestibular system for
Sensing head movement
