voice lecture 3 Flashcards

1
Q

extrinsic muscles

A
  • paired muscles; referred to as the strap muscles of the neck
  • stabilized the laryngeal neck posture
  • raises and lowers the larynx
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

intrinsic muscles

A

-these muscles control pitch and loudness as well as quality of voice

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

suprahyoids

A

laryngeal elevators (come from up above)

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

infrahyoids

A

laryngeal depressors (come to hyoid from below)

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

what are the suprahyoid muscles

A

digastric
mylohyoid
stylohyoid
geniohyoid

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

what are the infra hyoid muscles

A

sternohyoid
omohyoid
thryohyoid
sternothryoid

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

Digastric

A

anterior: originates from interior aspect of the mandible and inserts to a tendon in the hyoid bone (pulls hyoid bone forward and raises it)
posterior: originates from the mastoid process (pulls hyoid bone backward and raises it)

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

mylohyoid

A

the muscle forms the floor of the mouth. fibers originate from medial aspect of the mandible at the symphysis near the last molar
(raises the hyoid bone and pulls it forward)

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

stylohyoid

A

-long muscle; originates at the stylloid process of the temporal bone
(raises hyoid bone and pulls its backwards; elevates and retracts the hyoid and the larynx)

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

geniohyoid

A

-originates from the medial aspect of the mandible at the interior medial aspect (chin)
(raises the hyoid bone and pulls it backward)

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

sternohyoid

A

-strap muscle and lies on the anterior surface of the neck

on contraction lowers the hyoid cartilage

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

omohyoid

A

narrow, long muscle;located on the anterolateral surface of the neck (on contraction it pulls the hyoid inferiorly(lower))

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

thyrohyoid

A

located in the anterior neck deep

on contraction raises larynx and decreases distance between thyroid and hyoid

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

sternothyroid

A

located in the anterolateral aspect of the neck

on contraction it depresses the thyroid cartilage

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

intrinsic muscles of the larynx

A
  • paired muscles; both origin and insertion are inside larynx; control pitch, loudness and quality of voice
  • shape glottis; act as tensors to elongate and tighten vocal folds; act as relaxers to shorten the vocal folds and oppose tensors
  • controls vibratory nature of vocal folds
  • abducts (opens) the vocal folds; separate the arytenoids and vocal folds for respiration
  • adducts (closes) the vocal folds; bring the artyenoids together to protect the airway and for phonation; control medial compression, the degree of force in bringing vocal folds together
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what are the 5 intrinsic muscles

A
  1. thyroarytenoid
  2. posterior cricoarytenoid
  3. lateral cricoarytenoid
  4. interarytenoid
  5. cricothyroid
17
Q

thyroidarytenoid

A
  • muscle of the vocal fold; adductor(closes); tensor; and relaxer; fan shaped
  • lowers , shortens, thickens, stiffens body of vocal fold
  • two parts: thyromuscularis and thyrovocalis
18
Q

posterior cricoarytenoid

A
  • only abductor (opens) muscle of the larynx; protects the airways
  • elevates, elongates, thins, stiffens all layers of vocal folds; abuducts vocal folds; involved in breathing
19
Q

lateral cricoarytenoid

A
  • antagonist to posterior cricoarytenoid muscle
  • lowers,elongates, things (stiffens all layers of vocal fold)
  • adductor (closes) vocal folds; can act as a relaxer; slightly fan shaped; located deep to the thyroid cartilage
  • contracting unopposed it will shape glottis for a whisper
20
Q

interarytenoid

A

-adductor (closes); located on the interior surface of the arytenoid cartilage; function to approximate the arytenoid cartilages; has a role in mediating compression of vocal folds; may serve to depress the epiglottis during swallowing

21
Q

what are the 2 parts of the interarytenoid

A
  1. oblique

2. transverse

22
Q

cricothyroid

A
  • broader superiorly than inferiorly; also fan shaped; only other muscle than cricoarytenoid that tenses or elongates the vocal folds (which is necessary to increase pitch)
  • lowers; stretches, elongates, thins; stiffens all layers of vocal folds
  • originates from the anterolateral arch of the cricoid cartilage
23
Q

What are the adductors of the intrinsic muscles?

A

CLOSE

  • interarytenoids
  • lateral cricoarytenoids
24
Q

what are the abductors of the intrinsic muscles

A

OPEN

-posterior cricoarytenoids

25
Q

what are the glottal tensors of the intrinsic muscles

A
ELONGATION & INCREASE TENSION
-cricothryroid muscle
-thyrotenoids:
thryomuscularis 
thryovocalis
26
Q

what are the glottal relaxers

A
  • thyroarytenoids

- lateral cricoarytenoids