Laryngeal Muscles

Front 1

Name the three major groups of laryngeal muscles

Back 1

extrinsic, intrinsic, supplemental

Front 2

extrinsic laryngeal muscles placement

Back 2

one part connected to out of larynx

Front 3

intrinsic laryngeal muscles placement

Back 3

both attachments confined to the larynx

Front 4

divisions of supplemental laryngeal muscles

Back 4

suprahyoid and infrahyoid (laryngeal elevators and depressors)

Front 5

name the extrinsic muscles

Back 5

sternothyroid, thyrohoid, inferior pharyngeal constrictor

Front 6

sternothyroid location

Back 6

anterior neck, covered by sternohyoid and omohyoid muscles, lower third covered by sternocleidomastoid muscle

Front 7

sternothyroid: origin and insertion

Back 7

-origin: manubrium of sternum and 1st costal cartilage

-insertion: oblique tendon of thyroid cartilage

Front 8

sternothyroid function

Back 8

to draw the thyroid cartilage down

Front 9

thyrohyoid location

Back 9

anterior neck; covered by omohyoid and sternohyoid muscles

Front 10

thyrohoid: origin and insertion

Back 10

-origin: oblique tendon of thyroid

-insertion: lower border of hyoid bone

Front 11

thyrohoid function

Back 11

contract decreases distance between thyroid cartilage and hyoid bone

Front 12

inferior pharyngeal constrictor location

Back 12

muscle fibers of the lower portion from thyroid and cricoid cartilages

Front 13

cricopharyngeus muscle

Back 13

fibers that arise from the cricoid cartilage with a horizontal course ( as opposed to upward course in thyroid cartilage)

Front 14

inferior pharyngeal constrictor function

Back 14

active during deglutition( swallowing), form a principal resonating cavity of the vocal mechanism

Front 15

name the suprahyoid muscles (laryngeal elevators)

Back 15

digastric, stylohyoid, mylohyoid, geniohyoid, hyoglossus, genioglossus

Front 16

2 muscles of suprahyoid muscles that affect the larynx directly

Back 16

hyoglossus and genioglossus

Front 17

2 parts to digastric muscle

Back 17

anterior and posterior belly; two bellies meet and joined by an intermediate tendon- perforates stylohyoid muscle

Front 18

digastric muscle

Back 18

contraction raises the hyoid bone, or assist in depression of the lower jaw

Front 19

stylohyoid muscle location

Back 19

superficial to posterior belly of digastric muscle

Front 20

stylohyoid muscle function

Back 20

contraction draws the hyoid bone up and backward

Front 21

mylohyoid muscle description

Back 21

thin, troughliek sheet of muscle that forms muscular floor of mouth