Intrinsic Laryngeal Muscles

Question 1

This muscle originates in the anterior surface of the cricoid cartilage beneath the arch and inserts into the lower surface of the thyroid lamina

Answer 1

the pars recta of the cricothyroid

Question 2

The thyroepiglottic muscle is innervated by the

Answer 2

recurrent laryngeal nerve, X vagus

Question 3

This muscle constricts the laryngeal opening

Answer 3

Aryepiglottic muscle

Question 4

the superior thyroarytenoid is innervated by the

Answer 4

recurrent laryngeal nerve, X vagus

Question 5

The aryepiglottic muscle is innervated by the

Answer 5

recurent laryngeal nerve, X vagus

Question 6

This is the only laryngeal intrinsic muscle that abducts the vocal folds

Answer 6

posterior cricoarytenoid

Question 7

This muscle originates in the inner surface of the thyroid at the angle and inserts into the lateral side of the epiglottis

Answer 7

thyroepiglottic muscle

Question 8

This muscle adducts the vocal folds by moving the muscular process of the arytenoids forward and medially

Answer 8

lateral cricoarytenoid

Question 9

This muscle pulls the apex of the arytenoid medially causing the vocal folds to adduct

Answer 9

Oblique arytenoid

Question 10

This muscle originates in the posterior base of the muscular arytenoid process and inserts into the apex of the opposite arytenoid

Answer 10

Oblique arytenoid

Question 11

The cricothyroid is innervated by the

Answer 11

external branch of the superior laryngeal vagus nerve

Question 12

This muscle originates in the superior-lateral surface of the cricoid cartilage and inserts into the muscular process of the arytenoid

Answer 12

Lateral cricoarytenoid

Question 13

This muscle originates in the cricoid cartilage and inserts into the thyroid cartilage between laminae and the inferior horns

Answer 13

Pars oblique of the cricothyroid

Question 14

the thyromuscularis is innervated by the

Answer 14

recurrent laryngeal nerve, X vagus

Question 15

This muscle is assumed to serve as a relaxer of the vocal folds although it has not been demonstrated

Answer 15

Superior thyroarytenoid

Question 16

The transverse arytenoid is innervated by the

Answer 16

X vagus, recurrent laryngeal nerve

Question 17

Name the two glottal tensors

Answer 17

cricothyroid and thyrovocalis

Question 18

This muscle dilates the airway

Answer 18

thyroepiglottic muscle

Question 19

Name the two heads of the cricothyroid

Answer 19

Pars recta & Pars oblique

Question 20

This muscle originates in the posterior cricoid lamina and inserts into the posterior aspect of the arytenoid

Answer 20

posterior cricoarytenoid

Question 21

This muscle rocks the arytenoid cartilage laterally causing the vocal folds to abduct

Answer 21

posterior cricoarytenoid

Question 22

This muscle depresses the thyroid relative to the cricoid and tenses the vocal folds

Answer 22

Cricothyroid

Question 23

This muscle originates in the inner surface of the thyroid cartilage near the notch and inserts in the lateral surface of the arytenoid vocal process

Answer 23

Thyrovocalis

Question 24

The thyromuscularis is also known as hte

Answer 24

lateral thyroarytenoid

Question 25

The oblique arytenoid is innervated by the

Answer 25

X vagus, recurrent laryngeal nerve

Question 26

Name the three intrinsic laryngeal muscles that adduct the vocal folds

Answer 26

lateral cricoarytenoid, transverse arytenoid, oblique arytenoid

Question 27

This muscle relaxes the vocal folds

Answer 27

thyromuscularis

Question 28

The transverse arytenoid _____ the vocal folds

Answer 28

adducts

Question 29

The lateral cricoarytenoid is innervated by the

Answer 29

X vagus, recurrent laryngeal nerve

Question 30

The posterior cricoarytenoid is innervated by the

Answer 30

X vagus, recurrent laryngeal nerve

Question 31

This muscle is a continuation of the oblique arytenoid muscle from the arytenoid apex and inserts into the lateral side of the epiglottis

Answer 31

Aryepiglottic muscle

Question 32

The thyrovocalis is innervated by the

Answer 32

recurrent laryngeal nerve, X vagus

Question 33

This muscle originates in the inner surface of the thyroid cartilage near the notch and inserts into the base of the muscular process of the arytenoid cartilage

Answer 33

thyromuscularis

Question 34

This muscle originates in the lateral margin of the posterior arytenoid and inserts into the opposite arytenoid’s posterior surface

Answer 34

Transverse arytenoid

Question 35

This muscle originates in the inner angle of the thyroid cartilage and inserts into the muscular process of the arytenoid

Answer 35

superior thyroarytenoid