Anatomy of Phonation: laryngeal musculature

Question 1

Name adductors of the larynx.

Answer 1

lateral cricoarytenoid (LCA); Interarytenoids (transverse and obliques)

Question 2

Name the abductor of the larynx.

Answer 2

posterior cricoarytenoids (PCA)

Question 3

Name tensors of the larynx.

Answer 3

thyroarytenoid m; cricothyroid

Question 4

Name relaxers of the larynx.

Answer 4

thyroarytenoid m

Question 5

muscles whose origin and insertion (both attachments) are confined to the larynx

Answer 5

intrinsic m

Question 6

muscles with one attachment on a laryngeal structure and the other on a non-laryngeal structure

Answer 6

extrinsic m.

Question 7

adduct vocal folds and increase medial compression (brings arytenoid processes toward midline)

Answer 7

LCAs

Question 8

adduct vocal folds by pulling arytenoids closer together

Answer 8

transverse interarytenoids

Question 9

pull the apex of the arytenoids medially; pull the epiglottis to cover the laryngeal opening

Answer 9

olique interarytenoids

Question 10

open and widen glottis by moving VFs laterally

Answer 10

PCAs

Question 11

tense the VFs when contracted along with cricothyroid (medial TA)

Answer 11

thyrovocalis

Question 12

depresses thyroid relative to cricoid; tenses VFs

Answer 12

cricothyroid

Question 13

When VFs are tense and stretched, our pitch…

Answer 13

is higher

Question 14

When VFs are short and fat (bunched up), our pitch…

Answer 14

is lower

Question 15

pitch based on VF mass

Answer 15

habitual pitch

Question 16

relaxes the VFs; pull the arytenoids toward the thyroid cartilage (lateral TA)

Answer 16

thyromuscularis

Question 17

gliding of arytenoids

Answer 17

adduct and abduct the VFs

Question 18

rotation of arytenoids

Answer 18

helps lengthen and shorten VFs

Question 19

rocking of thyroid and cricoid cartilages

Answer 19

tenses and relaxes the VFs by stretching and loosening them

Question 20

dilates the laryngeal opening (expands the airway)

Answer 20

thyroepiglottic m.

Question 21

relaxes VFs

Answer 21

superior thyroarytenoid m.

Question 22

protects airway during swallowing by constricting laryngeal opening

Answer 22

aryepiglottic m.