Vestibular System

Question 1

5 sensory organs of the inner ear:

Answer 1

Utricle
Saccule
Ampullae of 3 semicircular ducts

Question 2

The maculae of the utricle and saccule detect ___ and static ___

Answer 2

Linear acceleration

Static equilibrium

Question 3

When hair cells move toward ___ they depolarize

Answer 3

Kinocilium

Question 4

When hairs move away from kinocilium, the receptors ___

Answer 4

Hyperpolarize

Question 5

The axis of mechanical sensitivity in the macula is oriented toward ___

Answer 5

Striola

Question 6

Cell bodies of the hair cells sensory neurons are located in the superior and inferior ___ ganglia

Answer 6

Vestibular

Question 7

Single, long process of the hair cells is ___

Answer 7

Kinocilium

Question 8

Short processes of the hair cells are called

Answer 8

Stereocilia

Question 9

The processes of the hair cells are embedded in a gelatinous ___

Answer 9

Cupula

Question 10

The direction of nystagmus is defined as the direction of the ___ movement

Answer 10

Fast

Question 11

T/F Nystagmus occurs in the same direction as head rotation

Answer 11

True

Question 12

T/F Post- rotatory nystagmus occurs in the same direction of head rotation

Answer 12

False

Post rotatory nystagmus occurs in the opposite direction of head rotation

Question 13

The ___ is the major integrative center for balance

Answer 13

Vestibular nuclei

Question 14

___ integrates input from vestibular receptors, somatic respectors, and cerebrum

Answer 14

Cerebellum