Exam 3

Question 1

What makes up the brainstem?

Answer 1

Midbrain, pons, medulla

Question 2

Responsible for lower level functions such as perception of loudness and pitch

Answer 2

Brainstem

Question 3

Center for distribution of sensory activity

Answer 3

Thalamus

Question 4

2 hemispheres separated by the longitudinal fissure

Answer 4

Cerebral cortex

Question 5

What are the 2 parts of the ascending/afferent auditory pathway

Answer 5

Contralateral and ipsilateral

Question 6

Main pathway of the ascending auditory pathway

Answer 6

Contralateral

Question 7

Secondary pathway of the ascending auditory pathway

Answer 7

Ipsilateral

Question 8

How does the acoustic nerve leave the cochlea?

Answer 8

Through the internal auditory meatus

Question 9

First major nucleus of the central auditory system

Answer 9

Cochlear nucleus

Question 10

What is the ascending auditory pathway?

Answer 10

Auditory nerve, cochlear nucleus, superior olivary complex, lateral meniscus, inferior colliculus, medial geniculate body, auditory cortex

Question 11

Same side as stimulated cochlea

Answer 11

Ipsilateral path

Question 12

Opposite side as stimulated cochlea

Answer 12

Contralateral path

Question 13

Juncture of decussating fibers between cochlear nucleus and the superior olivary complex

Answer 13

Trapezoid body

Question 14

Where is the superior olivary complex located?

Answer 14

Medulla

Question 15

Receives direct input from the cochlea; controls the reflex activity for the middle ear muscles

Answer 15

Superior olivary complex

Question 16

What 2 muscles does the superior olivary complex control?

Answer 16

Tensor tympani, stapedius

Question 17

CN VII contracts the ____ muscle

Answer 17

Stapedius

Question 18

CN V contracts the ____ muscle

Answer 18

Tensor tympani

Question 19

What is the superior olivary complex critical for?

Answer 19

Localization of sound; intensity and latency differences between the ears

Question 20

Where is the nucleus of the lateral lemniscus?

Answer 20

Pons

Question 21

Sensitive to timing and amplitude change in sound

Answer 21

Lateral lemniscus

Question 22

Where is the inferior colliculus located?

Answer 22

Midbrain

Question 23

Where decussation and startle response occur

Answer 23

Inferior colliculus

Question 24

True or false: No fibers bypass the inferior colliculus

Answer 24

False

Question 25

Where is the medial geniculate body located?

Answer 25

Thalamus

Question 26

Sensory distribution center

Answer 26

Thalamus

Question 27

Afferent auditory fibers that fan out to many smaller fibers

Answer 27

Auditory radiation

Question 28

Where is auditory radiation occurring?

Answer 28

Medial geniculate body to auditory cortex

Question 29

Where is the cortical auditory reception area located?

Answer 29

Temporal lobes

Question 30

Where complex auditory information (speech) is processed

Answer 30

Cortical auditory reception area