Intrinsic Laryngeal Muscles

Question 1

Origin of Aryepiglottic

Answer 1

Apex of the arytenoid cartilage

Question 2

Insertion of Aryepiglottic

Answer 2

Epiglottis

Question 3

Action of Aryepiglottic

Answer 3

Draws the epiglottis posteriorly and downward during swallowing

Question 4

Origin of Oblique Arytenoid

Answer 4

Muscular process of the arytenoid cartilage

Question 5

Insertion of the Oblique Arytenoid

Answer 5

Posterior surface of the contralateral arytenoid cartilage, near its apex

Question 6

Action of Oblique Arytenoid

Answer 6

Draws the arytenoid cartilage together, adducting the vocal folds

Question 7

Origin of Transverse Arytenoid

Answer 7

Posterior surface of the arytenoid cartilage

Question 8

Insertion of Transverse Arytenoid

Answer 8

Posterior surface of the contralateral arytenoid cartilage

Question 9

Action of Transverse Arytenoid

Answer 9

Draws the arytenoid cartilage together, adducting the vocal cords

Question 10

Origin of Lateral Cricoarytenoid

Answer 10

Arch of the cricoid cartilage

Question 11

Insertion of Lateral Cricoarytenoid

Answer 11

Muscular process of the arytenoid cartilage

Question 12

Action of Lateral Cricoarytenoid

Answer 12

Draws the muscular process of the arytenoid cartilage anteriorly ; which pivots the arytenoid cartilage and adducts the vocal cords

Question 13

Origin of Posterior Cricoarytenoid

Answer 13

Posterior surface of the lamina and the cricoid cartilage

Question 14

Insertion of Posterior Cricoarytenoid

Answer 14

Muscular process of the arytenoid cartilage

Question 15

Action of the Posterior Cricoarytenoid

Answer 15

Draws the muscular process of the arytenoid cartilage posteriorly ; which pivots the arytenoid cartilage and abducts the vocal cords

Question 16

Origin of Cricothyroid

Answer 16

Arch of the cricoid cartilage

Question 17

Insertion of Cricothyroid

Answer 17

Inferior border of the thyroid cartilage

Question 18

Action of Cricothyroid

Answer 18

Draws the thyroid cartilage forward, lengthening the vocal ligaments

Question 19

Origin of Thyroarytenoid

Answer 19

Inner surface of the thyroid cartilage anteriorly

Question 20

Insertion of Thyroarytenoid

Answer 20

Lateral border of the arytenoid cartilage

Question 21

Action of Thyroarytenoid

Answer 21

Draws the arytenoid cartilage forward, relaxing and adducting the vocal folds

Question 22

Origin of Thyroepiglottic

Answer 22

Inner surface of the thyroid cartilage near the laryngeal prominence

Question 23

Insertion of Thyroepiglottic

Answer 23

Lateral surface of the epiglottic cartilage

Question 24

Action of Thyroepiglottic

Answer 24

Draws the epiglottic cartilage downward

Question 25

Origin of Trachealis

Answer 25

Posterior edge of the tracheal cartialage

Question 26

Insertion of Trachealis

Answer 26

Posterior edge of the tracheal cartilage of other side (joins tracheal rings posteiorly)

Question 27

Action of the Trachealis

Answer 27

Constricts the bronchi and trachea

Question 28

Origin of Vocalis

Answer 28

Surface of the thyroid cartilage, vocal process of the arytenoid cartilage

Question 29

Insertion of Vocalis

Answer 29

Vocal ligament

Question 30

Action of Vocalis

Answer 30

Relaxes segments of the vocal ligament thereby adjusting pitch