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Voice and Upper Airways Disorders > Laryngeal Musculature > Flashcards

Laryngeal Musculature Flashcards

1
Q

digastric muscle: intrinsic or extrinsic?

A

extrinsic

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2
Q

suprahyoid muscles consist of

A
  • digastric muscle
  • mylohyoid muscle
  • geniohyoid muscle
  • stylohyoid muscle
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3
Q

digastric muscle: paired or unpaired?

A

paired

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4
Q

digastric muscle consists of 2 things…

A
  1. anterior belly
  2. posterior belly
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5
Q

anterior belly of the digastric muscle: function

A

hyoid and larynx are pulled forward

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6
Q

anterior belly of the digastric muscle: innervation

A

vagus nerve CN10

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7
Q

posterior belly of the digastric muscle: function

A

hyoid and larynx elevate and retract

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8
Q

posterior belly of digastric muscle: innervation

A

facial nerve CN7

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9
Q

mylohyoid muscle: intrinsic or extrinsic?

A

extrinsic

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10
Q

mylohyoid muscle: paired or unpaired?

A

unpaired

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11
Q

mylohyoid muscle: function

A

hyoid and larynx elevate and pull forward

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12
Q

mylohyoid muscle: innervation

A

trigeminal nerve CN5

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13
Q

geniohyoid muscle: intrinsic or extrinsic?

A

extrinsic

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14
Q

geniohyoid muscle: paired or unpaired?

A

paired

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15
Q

geniohyoid muscle: function

A

hyoid elevates and pulls forward when contracted

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16
Q

geniohyoid muscle: innervation

A

hypoglossal nerve CN12

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17
Q

stylohyoid muscle: intrinsic or extrinsic?

A

extrinsic

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18
Q

stylohyoid muscle: paired or unpaired?

A

paired

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19
Q

stylohyoid muscle: function

A

hyoid and larynx elevate and pull back

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20
Q

stylohyoid muscle: innervation

A

facial nerve CN7

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21
Q

infrahyoid muscles consists of

A
  • thyrohyoid muscle
  • sternothyroid muscle
  • omohyoid muscle
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22
Q

thyrohyoid muscle: intrinsic or extrinsic?

A

extrinsic

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23
Q

thyrohyoid muscle: paired or unpaired?

A

paired

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24
Q

thyrohyoid muscle: functions, there are 2

A

if hyoid bone is fixed…
1. larynx elevates
2. hyoid depress

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25
Q

thyrohyoid muscle: innervation

A

hypoglossal nerve CN12

26
Q

sternothyroid muscle: intrinsic or extrinsic?

27
Q

sternothyroid muscle: function

A

if hyoid bone is fixed…
1. larynx elevates
2. hyoid depress

28
Q

sternothyroid muscle: innervation

A

glossopharyngeal nerve CN9

29
Q

omohyoid muscle: intrinsic or extrinsic?

30
Q

omohyoid muscle: paired or unpaired?

31
Q

omohyoid muscle consists of…

A
  1. inferior belly
  2. superior belly
32
Q

inferior belly of the omohyoid muscle: function

A

hyoid and larynx pull down when contracted

33
Q

inferior belly of the omohyoid muscle: innervation

A

hypoglossal nerve CN12

34
Q

superior belly of the omohyoid muscle: function

A

hyoid and larynx pulled down

35
Q

superior belly of the omohyoid muscle: innervation

A

hypoglossal nerve CN12

36
Q

thyroarytenoid muscle: intrinsic or extrinsic?

37
Q

thyroarytenoid muscle: paired or unpaired?

38
Q

thyroarytenoid muscle: function

A
  • draws arytenoids and thyroids closer when contracted
  • shortens vfs, increase vf mass, decrease vf tension
39
Q

thyroarytenoid muscle: innervation

A

recurrent branch of the vagus nerve CN10

40
Q

cricothyroid muscle: intrinsic or extrinsic?

41
Q

cricothyroid muscle: paired or unpaired?

42
Q

cricothyroid muscle consists of…

A
  • pars recta (vertical part)
  • pars oblique (oblique part)
43
Q

pars recta of the cricothyroid muscle: function

A
  • rocking thyroid cartilage forward
  • distance thyroid and arytenoid
  • responsible for raising pitch
44
Q

pars recta of the cricothyroid muscle: innervation

A

external branch of superior branch of vagus nerve CN10

45
Q

pars oblique of the cricothyroid muscle: function

A
  • gliding motion
  • distances thyroids and arytenoids
  • responsible for raising pitch
46
Q

pars oblique of the cricothyroid muscle: innervation

A

external branch of superior branch of vagus nerve CN10

47
Q

lateral cricoarytenoid muscle: intrinsic or extrinsic?

48
Q

lateral cricoarytenoid muscle: function

A
  • rocking arytenoids down and in
  • primary adductor of vfs
49
Q

lateral cricoarytenoid muscle: innervation

A

recurrent branch of vagus nerve CN10

50
Q

posterior cricoarytenoid muscle: intrinsic or extrinsic?

51
Q

posterior cricoarytenoid muscle: function

A
  • rock arytenoids out and back
  • primary abductor of vfs
52
Q

posterior cricoarytenoid muscle: innervation

A

recurrent branch of vagus nerve CN10

53
Q

interarytenoid muscle: intrinsice or extrinsic?

54
Q

interarytenoid muscle: paired or unpaired?

55
Q

intearytenoid muscle consists of…

A
  1. transverse arytenoid muscle
  2. oblique interarytenoid muscle
56
Q

transverse arytenoid muscle: paired or unpaired?

57
Q

transverse arytenoid muscle: function

A
  • draw arytenoid muscle closer
  • responsible for medial compression when they are closed
58
Q

transverse arytenoid muscle: innervation

A

recurrent branch of vagus nerve CN10

59
Q

oblique interarytenoid muscle: paired or unpaired?

60
Q

oblique interarytenoid muscle: function

A
  • draws 2 arytenoids closer
  • reinforces medial compression
61
Q

oblique interarytenoid muscle: innervation

A

recurrent branch of vagus nerve CN10

Voice and Upper Airways Disorders (19 decks)

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