Membranes & Ligaments

Question 1

Triticeal cartilage

Answer 1

Embedded in lateral thyrohyoid ligament

Question 2

Fibroelastic membrane

Answer 2

Forms support structure for cavity of the larynx as well as the vocal folds themselves

Question 3

Quadrangular membranes of Fibroelastic membrane

Answer 3

Runs from arytenoids to the epiglottis and thyroid cartilage. Free in superior and inferior, attaches to arytenoid cartilage and epiglottis. Superior margins form aryepiglottic fold, free inferior margins form the vestibular fold (false vocal fold)

Question 4

Aryepiglottic folds

Answer 4

Run from side of epiglottis to arytenoid apex- forms upper margins of quadrangular membrane

Question 5

Conus elasticus

Answer 5

Can also be called cricothyroid membrane. Elastic portion of larynx that connects cricoid with thyroid and arytenoid cartilage. Upward free extension of conus elasticus forms the vocal ligament (true vocal fold).

Question 6

Vocal ligament

Answer 6

Upper portion of conus elasticus- 2 strong bands enclosed within vocal folds- attaches at front of thyroid cartilage and extends to vocal process of arytenoid.

Question 7

Cricotracheal ligament

Answer 7

Connects lower border of cricoid cartilage with upper border of 1st tracheal ring

Question 8

Thyroepiglottic ligament

Answer 8

Connects epiglottis to interior portion of thyroid cartilage, near thyroid notch

Question 9

Laryngeal cavity- 4 parts

Answer 9

Aditus
Vestibule
Laryngeal ventricle
Glottis

Question 10

Aditus

Answer 10

Entrance from pharynx

Question 11

Vestibule

Answer 11

Cavity between aditus and false vocal folds

Question 12

Laryngeal ventricle

Answer 12

Space between true and false vocal folds

Question 13

Glottis

Answer 13

Space between vocal folds inferior to the ventricle and superior to conus elasticus. Most important laryngeal space for speech, defined by variable sphincter that permits voicing.
Vocal folds and arytenoid cartilages lay at the base/margins of the glottis.

Question 14

True vocal folds

Answer 14

Combines free edge of conus elasticus and vocalis muscle- vibrates to produce sound, white due to lack of blood supply

Question 15

False vocal folds (ventricular)

Answer 15

Combination of ventricular ligament and overlying epithelial tissue.

• Space between vocal folds is called the false glottis
• Does NOT vibrate to produce sound

Question 16

What are the 5 components of the vocal folds?

Answer 16

Epithelium
Lamina Propria
-superficial
-intermediate
-deep
Thyroartenoid muscle
-thyrovocalis
-thyromuscalaris

Question 17

Vocal fold hydration

Answer 17

The most frequent prescription for irritated vocal folds (nodules, ulcers). Medication promotes water retention, and lubrication of larynx helps folds vibrate more periodically.

Question 18

Thyrohyoid membrane

Answer 18

Stretched across the space between the greater cornu of the hyoid and lateral thyroid cartilage. Thicker medially and laterally. Contains medial and lateral thyrohyoid ligaments