Larynx and phonation Flashcards
what is the epiglottis
C6/lower borderr of cricoid cartilage
laryngeal skeleton elements (3)
hyoid bone, thyroid cartilage, cricoid cartilage
thyroid cartilage elements (3)
superior horn, lamina, inferior horn
cricoid cartilage elements (2)
lamina and arch
larynx cartilage elements (2)
deficient posteriorly and angle anteriorly
arytenoid cartilage elements (4)
superior to cricoid cartilage, muscular process, vocal process, 2 movements
larynx elements (7)
epiglottic cartilage, hyoid bone, thyroid membrane, thyroid cartilage, cricothyroid ligament/membrane, cricoid cartilage, arytenoid cartilage
vocal ligament elements (3)
vocal process of arytenoid cartilage, angle of thyroid, vocal ligament
how do vocal ligaments produce sound
vibrate against each other
laryngeal inner elements (7)
epiglottic cartilage, aryepiglottic ligament, quadrangular membrane, vestibular ligament, arytenoid cartilage, vocal ligament, cricoid cartilage
laryngeal mucosa elements (5)
epiglottis, aryepiglottic fold, vestibular fold/false vocal cord, ventricle, vocal fold/true vocal cord
when do vocal ligaments need to be abducted
breathing
when do vocal ligaments need to be adducted
phonation
what alters the position of the vocal ligaments
intrinsic laryngeal muscles
parts of the vocal ligaments (5)
epiglottis, rima glottis, vocal fold, aryepiglottic fold, vestibular fold
intrinisic muscles of the larynx (6)
posterior cricoarythenoid, transverse and oblique arytenoids, lateral cricoarytenoid, cricothyroid, thyroarytenoid, vocalis
which intrinsic laryngeal muscle goes to the exterior
cricothyroid
what lengthens the vocal folds
cricothyroid
what abducts vocal folds
posterior cricothyroid
what adducts the vocal folds
lateral cricoarytenoid
what closes the rima glottis
transverse and oblique arytenoid
what relaxes vocal fold
vocalis and thyroarytenoid
what nerve supplies the larynx
vagus CNX
what happens if vagus is injured (2)
hoarse voice and stridor
noisy breathing
stridor
branches off the vagus upplying intrinsic laryngeal muscles (4)
superior laryngeal, external laryngeal, internal laryngeal, recurrent laryngeal
what nerve supplies cricothyroid
external laryngeal
what nerve supplies sensation to the mucosa
internal laryngeal
what supplies the intrinsic muscles except for cricothyroid
recurrent laryngeal
what is safer that a tracheotomy for emergency airway
cricothyroid membrane puncture
blood supply to the larynx (4)
superior thyroid vessels, superior laryngeal vessels, thyroid gland, inferior thyroid vein
what nerve runs with the superior laryngeal vessels
internal laryngeal nerve
what needs to be navigated in intubation (8)
teeth, tongue, epiglottis, laryngeal inlet, vestibular fold, thyroid cartilage, vocal fold, cricoid cartilage