Auditory Systemt

Question 1

Sound frequencies are detected between 20Hz to ____ Hz

Answer 1

20—20,000 HZ

Question 2

3 structures of the ear:

Answer 2

Outer
Middle
Inner

Question 3

Outer ear collects and conducts ___ waves to what membrane?

Answer 3

Sound waves

Tympanic membrane

Question 4

2 muscles of the middle ear

Answer 4

Tensor tympani

Stapedius

Question 5

Membrane of the middle ear

Answer 5

Tympanic

Question 6

3 auditory ossicles are?

Answer 6

Malleus
Incus
Stapes

Question 7

The bony labyrinth of the temporal bone in the inner ear contains what fluid?

Answer 7

Perilymph

Question 8

The membranous labyrinth of the inner ear contains what fluid?

Answer 8

Endolymph

Question 9

The cochlea takes how many turns around the modiolus?

Answer 9

2.5

Question 10

The cochlea takes 2.5 turns around the ___

Answer 10

Modiolus

Question 11

Scalia vestibuli and scale tympani are connected at the ___

Answer 11

Helicotrema

Question 12

The scalp vestibuli and scala tympani are connected at the helicotrema and contain?

Answer 12

Perilymph

Question 13

The organ of Corti is a ___ analyzer

Answer 13

Frequency

Question 14

Organ of Corti contains ___ cells and ___ membrane

Answer 14

Hair cells

Tectorial membrane

Question 15

Hair cells of organ of Corti are __ receptors

Answer 15

Mechanoreceptors

Question 16

Hair cells of organ of Corti have 2 types of cell types

Answer 16

Stereocilia (microvilli)

Kinocilium

Question 17

The bipolar cells of spiral ganglion are ____ sensory neurons

Answer 17

1st order

Question 18

Cochlear nuclei are ___ sensory neurons

Answer 18

2nd order

Question 19

The medial geniculate nucleus of thalamus is ___ sensory neuron

Answer 19

3rd order

Question 20

The dorsal cochlear nucleus projects contralateral to the lateral ___

Answer 20

Lemniscus

Question 21

The ventral cochlear nucleus projects bilaterally to _____ nuclei

Answer 21

Superior olivary

Question 22

The ventral cochlear nucleus fibers form the ___ as they travel contralaterally

Answer 22

Trapeziod body

Question 23

Transverse temporal gyri of Heschl contain the primary auditory cortex areas ___

Answer 23

41 and 42

Question 24

Transverse temporal gyri of Heschl projects the the auditory association cortex, area ___

Answer 24

22

Question 25

Hearing defects can be classified as ___ deafness and ___ deafness

Answer 25

Conduction

Sensorineural (perceptive)

Question 26

Conduction deafness can be caused by:

Answer 26

Otosclerosis

Otitis media

Question 27

Presbycusis is the most common type of hearing loss. Usually occurs with ___

Answer 27

Aging

Question 28

Presbycusis results form degenerative disease of which organ?

Answer 28

Organ of Corti

Question 29

Acoustic neuroma=

Answer 29

Schwannoma

Question 30

Schwannoma is a ___ nerve tumor with symptoms of ___ and unilateral deafness

Answer 30

Tinnitus