Sensory Systems: Vestibular Flashcards Preview

Integrative Neuroscience > Sensory Systems: Vestibular > Flashcards

Flashcards in Sensory Systems: Vestibular Deck (14)
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1
Q

Roll

A

x-axis rotation

2
Q

Pitch

A

y-axis rotation

3
Q

Yaw

A

z-axis rotation

4
Q

Labyrinth

A

Converts effects of gravity into neural impluses

5
Q

Utricle and Saccule respond to _____ of the head and static head position relative to ground.

A

linear accelerations (forward/backward)

6
Q

3 semicircular canals specialized to _____ for head turning.

A

encode rotation

7
Q

Vestibular nerves are _____.

A

tonically active

8
Q

Hair cells in the _____, _____, and _____ are selective for certain directions

A

ampulla
saccule
utricle

9
Q

The Otolith (Ear stone) organs:

A

Utricle

Saccule

10
Q

Small crystals sit in the _____ of the Utricle and Saccule.

A

gelatinous layer (otholitic membrane)

11
Q

The crystals in the Utricle and Saccule are acted on by gravity to activate _____.

A

hair cells

12
Q

Hair bundle movement occurs _____ in response to tilting of the head.

A

tonically

13
Q

Hair bundle movement occurs _____ in response to acceleration.

A

transiently

14
Q

Hair cells sit in the _____ of each canal, encapsulated by _____.

A

ampulla

gelatinous cupula