Unit 3: Vestibular System, Aphasia, and Otology Flashcards Preview

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Flashcards in Unit 3: Vestibular System, Aphasia, and Otology Deck (30):
1

L1: _____ detect angular acceleration

Semicircular Canals

2

L1: _____ detect linear acceleration.

Otolith organs

3

L1: ______ is a tumor type that is the most common neoplastic cause of hearing loss

vestibular Schwannoma/acoustic neuroma

4

L1: _____: the swelling at the end of a semicircular canal.

Ampulla

5

L1: In conductive hear loss, the minimum audible sound level is _____ for air conduction and ____ for bone conduction.

decreased; normal

6

L1: In most people, language is lateralized to the _____ hemisphere.

left

7

L1: Otolith organs (2)

Saccule, utricle

8

L1: Speech is _____ but not ______ for language.

necessary; sufficient

9

L1: The ____ in the ampulla contains sensory hair cells.

crista

10

L1: The hair cells project into a gel-like substance called the _____.

cupula

11

L1: What is the fluency of spontaneous speech and quality of comprehension in global aphasia?

Nonfluent; poor

12

L1: What pathologic pattern? Disorder of speech due to motor system involvement

Dysarthria

13

L1: What pathologic pattern? Lack of speech due to anarthria, aphonia, aphasia, or psychiatric disease

Mutism

14

L1: What pathologic pattern? Progressive hearing loss and decreased ability to understand supra-threshold speech due to degenerative physiologic changes

Presbycusis

15

L1: What pathologic pattern? Voice disorder related to laryngeal disease

Dysphonia

16

L2: ______: expansion of the endolymphatic compartment of the ear; associated with ________

Endolymphatic Hydrops; Meniere's Disease

17

L2: Characteristics of Broca's aphasia, Wernicke's aphasia, conduction aphasia, and global aphasia (2)

Poor repetition, Poor naming

18

L2: Gaze control is driven by neurons departing from the ______ and _____ vestibular nuclei ascending via the ______.

Medial, superior; medial longitudinal fasciculus (MLF)

19

L2: In the saccule, the axes of polarity are oriented such that they point ____ the striola

from

20

L2: In the utricle, the axes of polarity are oriented such that they point ____ the striola

toward

21

L2: Mutation in _______ is the most common cause of non-syndromic deafness.

Connexin 26

22

L2: Postural reflexes are driven by neurons departing from the _____ vestibular nucleus via the ______.

Lateral; Lateral vestibulospinal tract

23

L2: Postural reflexes receive afferent vestibular information from the ______.

urtricle

24

L2: Treatment for ototoxic hearing loss.

Corticosteroids and antioxidants

25

L2: Vestibular nerves have cell bodies in _____ and synapse in the ______.

scarpa's ganglion; vestibular nuclei

26

L2: What is the fluency of spontaneous speech and quality of comprehension in Broca's aphasia?

Nonfluent; good

27

L2: What is the fluency of spontaneous speech and quality of comprehension in conduction aphasia?

Fluent; good

28

L2: What is the fluency of spontaneous speech and quality of comprehension in Wernicke's aphasia?

Fluent; poor

29

L3: Mechanisms of Sensorineural Hearing Loss (3)

Hair cell loss, Endolymphatic hydrops, Loss of endocochlear potential

30

L4: Causes of hair cell loss (4)

Presbycusis, noise trauma, ototoxicity, genetic predisposition