Ch. 4 Intrinsic Muscles (Exam 2)

Question 0

The only abductor muscle is:

Answer 0

Posterior cricoarytenoid

Question 1

The 2 adductor muscles are:

Answer 1

Lateral cricoarytenoid,

Interarytenoids: transverse and oblique

Question 2

The 2 tensor muscles are:

Answer 2

Thyrovocalis,

Cricothyroid (pars recta and pars oblique)

Question 3

The only relaxer muscle is:

Answer 3

Thyromuscularis

Question 7

Pulls the apex of the arytenoids medially; works with the aryepiglottic muscle to pull the epiglottis to cover the laryngeal opening

Answer 7

Oblique interarytenoids

Question 8

Opens and widens the glottis by moving the vocal folds laterally; works opposite lateral cricoarytenoid; contraction of this muscle pulls the muscular process back, rocking the arytenoid cartilage and abducting the vocal folds

Answer 8

Posterior cricoarytenoids (PCA)

Question 9

Tenses the vocal folds when contracted along with the cricothyroid muscle

Answer 9

Thyrovocalis

Question 10

Depresses thyroid relative to cricoid; tenses and stretches the vocal folds; rocks the thyroid cartilage forward; composed of two heads responsible for pitch change

Answer 10

Cricothyroid

Question 11

Rocks the thyroid cartilage downward toward the cricoid cartilage; (elongates vocal folds)

Answer 11

Cricothyroid pars recta

Question 12

Joint allows the thyroid to slide forward and backward; elongates vocal folds by sliding thyroid forward

Answer 12

Cricothyroid pars oblique

Question 13

Relaxes the vocal folds; they pull the arytenoids toward the thyroid cartilage

Answer 13

Thyromuscularis

Question 14

Dilates the laryngeal opening (airway)

Answer 14

Thyroepiglottic

Question 15

Relaxes vocal folds (auxiliary intrinsic muscle)

Answer 15

Superior thyroarytenoid muscle

Question 16

Protects airway during swallowing (constricts laryngeal opening)

Answer 16

Aryepiglottic muscle

Question 18

These muscles have both attachments confined to the larynx, and their function controls sound production

Answer 18

Intrinsic muscles

Question 19

Adducts the vocal folds by bringing the vocal processes of arytenoids toward the midline; contraction of the muscle pulls the muscular process forward adducting the vocal folds (increases intensity)

Answer 19

Lateral cricoarytenoid (LCA)

Question 20

Adducts the vocal folds by pulling the two arytenoids closer together; also provides additional support for closing the vocal folds

Answer 20

Transverse interarytenoid