THE LARYNX Flashcards
these structures control passage into the airway; secondary function is speech
vocal folds
this type of vocal fold sits on the ventricles of the larynx?
false vocal folds
this type of vocal fold can actually change their shape and tension?
true vocal folds
sometimes food can get trapped here; a space?
vallecula
these are considered the ventricle of the larynx?
vocal folds
these are the unpaired cartilages of the larynx?
paired?
epiglottis
thyroid cartilage
cricoid cartilage
arytenoid cartilage
cuneiform cartilage
corniculate cartilage
triticeal cartilage
this paired cartilage of the larynx is where nearly all of the intrinsic laryngeal muscles connect?
arytenoid cartilage
this paired cartilage of the larynx is a very long fold that acts as a supportive structure for surrounding tissues?
cuneiform cartilage
this paired cartilage of the larynx is located atop the arytenoid cartilage?
corniculate cartilage
this paired cartilage of the larynx sits on the greater horn of the thyroid cartilage?
triticeal cartilage
what are all the muscles of the larynx innervated by? what specific branch of the vagus nerve innervates the intrinsic laryngeal muscles?
vagus n and its respective branches
recurrent laryngeal n
what are the intrinsic laryngeal muscles?
aryepiglottic m thyroarytenoid m transverse arytenoid m oblique arytenoid m lateral cricoarytenoid m posterior cricoarytenoid m
this intrinsic laryngeal muscle closes the epiglottis; runs from the arytenoid cartilage to the epiglottis
aryepiglottic m
this intrinsic laryngeal muscle aids in the relaxation of the vocal folds? what muscle lies here?
thyroarytenoid m
vocalis m
this muscle is associated with the intrinsic laryngeal muscles in which it is the inner band of the thyroarytenoid m that acts to tense the vocal cords?
vocalis m
this intrinsic laryngeal muscle closes the vocal cords; located behind the arytenoid cartilage and crosses the plate of cricoid cartilage?
transverse arytenoid m
this intrinsic laryngeal muscle closes the vocal folds and creates a crossing?
oblique arytenoid m
this intrinsic laryngeal muscle closes the vocal folds on the side of the cricoid cartilage?
lateral cricoarytenoid m
this intrinsic laryngeal muscle is the most important because it is the only muscle that opens the vocal folds/airway (the rest close it); it attaches to cricoid plate and base of arytenoid cartilage; creates tension on vocal folds
poster cricoarytenoid m
what are the extrinsic laryngeal muscles innervated by?
external branch of the superior laryngeal branch (off the Vagus)
what important muscle is found in the extrinsic laryngeal muscles? it tenses the vocal folds
cricothyroid m
what is the innervation of the larynx?
vagus nerve via recurrent laryngeal n and superior laryngeal n (external and internal branch)