Flashcards in 4.4 Larynx Deck (49)
What are the 3 unpaired cartilages?
thyroid, cricoid, and epiglottis
What are the 3 paired cartilages?
Arytenoid, corniculate, cuneiform
What part of the thyroid cartilage articulates with cricoid cartilage?
inferior horns of thyroid cartilage
What attaches to the oblique line of the thyroid cartilage? (3)
sternothyroid, thyrohyoid, and inferior constrictor mm.
What does the cricoid cartilage have superior articular facets for?
Where is the inferior end of the epiglottis attached?
back of thyroid cartilage via thyroepiglottic ligament
What tethers the epiglottis to the root of the tongue and facilitates epiglottic closure during swallowing?
glossoepiglottic ligament (median glossoepiglottic fold)
What do the anterior vocal processes of the arytenoid cartilages give attachment to?
vocal ligament and vocalis m.
What do the posterolateral muscular processes give attachment to?
thyroarytenoid, lateral and posterior cricoarytenoid mm.
Contraction of musculature results in swiveling of arytenoid cartilages to modify shape and size of ...., to control ...
glottis, to control phonation
What cartilage sits ontop of the arytenoid cartilages, and are within the aryepiglottic folds?
What cartilages are enclosed in the aryepiglottic folds but do not articulate with other laryngeal cartilages?
Why is the thyrohyoid membrane important for swallowing?
allows for elevation of larynx during swallowing for passage of bolus
What extends from the posterior surface of the thyroid cartilage to the vocal process of the arytenoid cartilage?
What is the upper border of the conus elastics?
What extends from the thyroid cartilage to the anterior lateral surface of the arytenoid cartilage (lateral aspect of corniculate cartilage)?
What 3 ligaments form the conus elastics (cricovocal ligament)?
cricothyroid, median cricothyroid, and vocal ligaments
Extends from the laryngeal inlet to the false vocal fold (vestibular folds)
vestibule of the larynx
Extend between the false vocal fold (ventricular fold) and the true vocal fold (vocal fold)
ventricles of the larynx
The space between the vocal folds and arytenoid cartilages and the narrowest portion of the laryngeal cavity
extend from the rima glottidis to the lower border of the cricoid cartilage
extend from the thyroid cartilage above the vocal ligament to the arytenoid cartilage
vestibular folds (false vocal cords)
Extend from the angle of the thyroid cartilage to the vocal processes of the arytenoid cartilages
vocal folds (true vocal cords)
The rima glottides is wide during...
The rima glottides is narrow during ...
What are the tensors of the larynx? (2)
cricothyroid m., and vocalis m.
What is the innervation of the cricothyroid m.?
external laryngeal branch from sup. laryngeal n.
What other actions does the vocalis m. have on the larynx besides tensing it?
adducts and relaxes (to modulate pitch)
What is cut in an emergency cricothyrotomy?
median cricothyroid ligament