Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Speech pathology uco > speech mech chapter 9 part 2 > Flashcards

speech mech chapter 9 part 2 Flashcards

1
Q

Muscles of middle ear attached

A

to
ossicles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Smallest muscles of human body

A

Imbedded in posterior wall of middle ear
*Pulls stapes posteriorly
*tendon attaches to the neck of the stapes
*May aid in word recognition in noise by
attenuating low frequency components
of the noise

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Stapedius muscle

A

Imbedded in posterior wall of middle ear
*Pulls stapes posteriorly
*tendon attaches to the neck of the stapes
*May aid in word recognition in noise by
attenuating low frequency components
of the noise

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Muscles of middle ear attached

A

ossicles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Tensor tympani

A

*Inserts into upper manubrium malli
*Pulls malleus anteromedially
*inserts in the manubrium of the
malleus and contraction may cause the
TM to become tense
– Innervation of the Tensor tympani is via the
trigeminal nerve (Vth cranial nerve)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Both muscles stiffen

A

middle ear
transmission system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Reduce transmission of acoustical
information at

A

low frequencies to
protect against loud sounds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Unfortunately does not protect
against

A

high frequency sounds
common in modern industrial
society

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Landmarks of medial wall of
middle ear cavity

A

– Oval window (fenestra ovalis)- footplate of
stapes is embedded in it
– Round window- entrance into scala tympani
of the cochlea
– Promontory of the cochlea
– Prominence of lateral semicircular canal
– Prominence of facial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Eustachian tube (auditory tube)

A

– Responsible for aeration of middle ear
– Maintains equilibrium between
atmospheric pressure and middle ear
pressure for optimal sound transmission
– 36 mm in length
– The tube is normally kept closed, but is
opened by muscles in the nasopharynx
– Opening occurs during yawning,
sneezing, swallowing, or excessive air
pressure applied to the nose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Mastoid

A

– Honeycombed with hundreds of air cells
– The cells are lined with mucous
membrane similar to the middle ear
– The bony protuberance behind the
auricle is the mastoid process
* Used for placement of the bone oscillator for
hearing testing
* the mastoid process may extend to the floor
of the middle ear cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

the inner ear contains sensors for balance which is

A

– The vestibular system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Osseous or bony labyrinth contains

A

inner ear structures
* Osseous vestibule
* Osseous semicircular canals
* Osseous cochlear labyrinth
* Membranous labyrinth
– Vestibule provides entrance to structures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

the inner ear contains sensors for hearing which is called

A

The cochlea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

osseous or bony vestibule Embedded within

A

petrous portion
of temporal bone
– The most dense bone in the body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Epithelial lining secretes perilymph

A

Fluid found within the superficial cavities of
the labyrinth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Oval window within

A

lateral wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

vestibular aqueduct within the

A

medial wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

vestibular contains three major recesses

A

– The spherical recess
– The cochlear recess
– The elliptical recess

20
Q

Canals of the vestibular system Contain

A

sense organs for
movement of the body in space
– Responsible for sensation of movement of
the head in space
– 3 rings in right angles to each other

21
Q

Anterior canals

A

sense movement of head
toward the shoulder

22
Q

Posterior canals

A

sense movement of head
when nodding “yes”

23
Q

Lateral semicircular canal

A

sense
movement of head when shaking head “no”

24
Q

Osseous Cochlear
Labyrinth looks like

A

Looks like a coiled snail shell
– Wraps around 2 5/8 time before reaching
apex

25
Q

modiolus

A

core of osseous labyrinth finely perforated bone

26
Q

Parts of the labyrinth

A

– Entryway to the labyrinth
– The vestibule
– Semicircular canals
– Osseous cochlear canal

27
Q

Divided by the osseous spinal
lamina into

A

– Scala vestibuli
– Scala tympani
– They contain perilymph

28
Q

Vital structure attaches to scala
media

A

Houses sensory organ for hearing

29
Q

The round window

A

Communicates between scala tympani and
middle ear

30
Q

The oval window

A

Communicates between scala vestibuli and
middle ear space

31
Q

Cochlear aqueduct

A

Small opening between the scala vestibuli
and the subarachnoid space of the cranial
cavity

32
Q

Perilymph shares

A

the same composition as
cerebrospinal fluid (CSF) via the cochlear
aqueduct.

33
Q

membranous labyrinth found

A

within the cavity of osseous
labyrinth
* Filled with fluid called endolymph

34
Q

Vestibule or entrance to inner ear

A

– Contains cochlea – sense organ of hearing
– Contains semicircular canals – sense organs
of balance

35
Q

Ampulla

A

expanded region of semicircular
canals near one opening to the vestibule
* Houses a crista ampularis- receptor organ for
movement

36
Q

Ultricle and saccule

A

– Within vestibule (bony)
– House organs of vestibular system

37
Q

Cochlear duct

A

– Between scala vestibuli and scala
tympani
– Make up intermediate scala media
– Houses sensory apparatus for hearing

38
Q

Reissner’s membrane

A

thin
separation between the perilymph of
the scala vestibuli and the endolymph
of the scala media

39
Q

Basilar membrane

A

“floor” of the
scala media that separates the scala
media from the scala tympani
*the organ of corti is on the basilar membrane.

40
Q

Organ of Corti sensory organ of hearing is within the

A

inner ear

41
Q

the organ of corti has four rows of hair cells that are

A

Supported by bed of Deiters’ cells
* Has three rows of outer hair cells (12,000 cells)
* Has a single row of inner hair cells (3,500 cells)

42
Q

Tunnel of Corti

A

separate inner and outer
cells, product of pillars of Corti

43
Q

Sterocilia (minute cilia) protrude from

A

surface of hair cells

44
Q

Inner hair cells innervated by

A

many nerve
fibers

45
Q

Outer hair cells innervated by

A

one nerve fiber

46
Q

vascular supply is from

A

labyrinthine

47
Q

Tectorial membrane

A
  • Arises from spiral limbus
  • Overlays hair cells
  • Processes acoustic stimuli

Speech pathology uco (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions