Exam 3 Pt 4

Question 1

Thyrohoid membrane and ligament

Answer 1

Found between hyoid bone and superior border of thyroid cartilage, membrane thickens medially and laterally.

Question 2

Triticial membrane

Answer 2

Is embedded in lateral hyothyroid ligament

Question 3

Hyoepiglottic ligament

Answer 3

Unpaired ligament, midline ligament extending from anterior surface of epiglottis to the upper border of the body of the hyoid bone

Question 4

Cricotracheal membrane

Answer 4

Connects lower border of cricoid cartilage with upper border of first tracheal ring.

Question 5

Intrinsic ligaments

Answer 5

Connect the cartilage of the larynx and form the support for the cavity of the larynx and vocal folds, helps regulate, direction and degree of movements, made of one sheet of connective tissue, continuous sheet that lines the entire larynx.

Question 6

Conus elasticus

Answer 6

Connects thyroid, cricoid and arytenoid cartilages with one another. Divided into a medial Cricothyroid ligament and two lateral. Cricothyroid membranes. .

Question 7

Medial Cricothyroid ligament

Answer 7

Band of yellow elastic tissue, and runs from midline of superior border of cricoid arch to inferior border of thyroid cartilage.

Question 8

Lateral Cricothyroid membrane

Answer 8

Thinner ligaments at midline, originates from superior border of cricoid cartilage which eventually becomes the vocal ligament, runs from vocal processes of arytenoid to angle of thyroid cartilage.

Question 9

Quadrangular membrane

Answer 9

Paired, arises from lateral margins of epiglottis and adjacent thyroid cartilage near the angle, attaches to the corniculate cartilage and medial surfaces of arytenoid, inferiorly the fibers thicken and become the ventricular ligament

Question 10

Aryepiglottic folds

Answer 10

Forms at the superior margins of quadrangular membranes, seals off the space in the laryngeal structure and direct the airstream into the Aditya and upward into the Resonatory passageways.

Question 11

Mucous membrane

Answer 11

Laryngeal cavities are lined with mucous from the trachea up, cells are columnar in shape and have cilia which beat towards the pharynx except at the margins of vocal folds, vocal fold tissue is multilayered and tightly bound.

Question 12

Three divisions of laryngeal cavity

Answer 12

Laryngeal vestibule, laryngeal ventricle, and inferior laryngeal ventricle.

Question 13

Laryngeal vestibule

Answer 13

Area in larynx above ventricular folds
Anterior wall- epiglottis
Lateral walls- aryepiglottic folds
Posterior walls- upper parts of arytenoid cartilages
Inferior limits- ventricular folds

Question 14

Laryngeal ventricle

Answer 14

Space between vocal folds and ventricular folds
Superior limits- ventricular folds
Inferior limits- vocal folds
Posterior walls- arytenoid
Lateral walls- inner wall of thyroarytenoid muscle

Question 15

Inferior laryngeal ventricle

Answer 15

Portion below the true folds, extends through to the trachea
Anterior walls- Cricothyroid ligament
Lateral wall- cricoid cartilage
Posterior wall- cricoid cartilage

Question 16

Sphincter

Answer 16

A ring like muscle which closes an orifice or passage

Question 17

Aryepiglottic sphincter

Answer 17

Muscle fibers embedded in aryepiglottic folds surrounding a pear shaped openings into laryngeal cavity, first line of defense against foreign objects, closes during swallowing and vomiting.

Question 18

Ventricular sphincter

Answer 18

Found between laryngeal vestibule and ventricle, during normal phonation, ventricular folds remain in quiet, open position, increases subglottic pressure by adding another door to keep air in lungs and foreign objects out.

Question 19

True vocal fold sphincter

Answer 19

Third door of closure, not effective in preventing outflow of air during effort closure, may close independently of other two sphincters.