Sensory Systems: Vestibular Flashcards Preview

Integrative Neuroscience > Sensory Systems: Vestibular > Flashcards

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

Roll

x-axis rotation

2

Pitch

y-axis rotation

3

Yaw

z-axis rotation

4

Labyrinth

Converts effects of gravity into neural impluses

5

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

linear accelerations (forward/backward)

6

3 semicircular canals specialized to _____ for head turning.

encode rotation

7

Vestibular nerves are _____.

tonically active

8

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

ampulla
saccule
utricle

9

The Otolith (Ear stone) organs:

Utricle
Saccule

10

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

gelatinous layer (otholitic membrane)

11

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

hair cells

12

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

tonically

13

Hair bundle movement occurs _____ in response to acceleration.

transiently

14

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

ampulla
gelatinous cupula