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Anatomy- Phonation

the anatomy of phonation

voiceless phonemes speech sounds that are produced without the use of vocal folds i.e. /s/, /f/
voiced phonemes speech sounds that are produced by action of vocal folds i.e. /z/, /v/
phonation (voicing) the product of vibrating the vocal folds; occurs within the larynx, source of voicing for speech
respiration source of energy for speech
glottis space between the vocal folds
subglottal region area below the vocal folds
ventricular fold also known as the false folds
MBS modified barium swallow
aryepiglottic fold connects the epiglottis with the apex of the arytenoid cartilage
cricoid cartilage complete ring resting atop the trachea; crikey, it's a ring! :)
thryoid cartilage largest of the laryngeal cartilages, articulates with the cricoid cartliage below; able to rock back and forth at the joint, inner surface provides anterior point of attachment for vocal folds
thyroid notch the vocal folds attach to the thyroid cartliage just behind this point; above the laryngeal prominenece
arytenoid cartilages paired cartilages that ride on high-backed upper surface of the cricoid cartliage; for posterior point of attachment for vocal folds, pyramid shaped
corniculate cartilages paired cartilages that ride on the superior surgace of each arytenoid cartliage; prominent landmarks in aryepiglottic folds
cuneiform cartilages small cartilages embedded within the aryepiglotic folds; provide support for membranous laryngeal covering
hyoid bone articulates with the thyroid cartilage by means of the thryoid's superior processes; located superior to larynx
epiglottis leaf-like cartilage located medially to the hyoid bone; protective structure, covers orifice of the larynx during swallowing
valleculae found between tongue and epiglottis, within folds arising from several ligaments; look like valleys
pyriform sinus space between the fold of the aryepiglottic membrane and thyroid cartilage laterally
epithelium most superficial layer of the vocal folds, an extremely thin sheet of squamous epithelium; aids in hydration of vocal folds by assisting in fluid retention
lamina propria deep to epithelial layer, connective tissue that underlines mucosal epithelia throughout the body; composed of three different tissues or layers
thyrovocalis muscle deep to lamina propria, 5th layer of vocal folds; medial muscle of vocal folds; tenses; draws vocal folds farther apart in front
arytenoid cartilage movements rocking, gliding, rotating
rocking of arytenoid cartilages brings vocal process of arytenoid cartliage together, so vocal folds are brought to midline
gliding of arytenoid cartilages anterior-posterior movement; change in vocal fold length
rotation of arytenoid cartliages rotates around a vertical axis through apex; for extreme positions of abduction (such as heavy breathing)
lateral cricoarytenoid primary adductor; rocks arytenoid medially, pulls muscular process forward during contraction
transverse and oblique arytenoid supporting adductors; bring arytenoids to midline
medial compression degree of force that is applied to vocal folds at point of contact; increased medial compression = increased force of adduction ex. yelling uses high degree of medial compression
posterior cricoarytenoid only abductor; pulls muscular process back; active during physical exertion
cricothyroid glottal tensor; rocks thyroid cartilage forward; responsible for tensing/lengthening vocal folds for pitch change
thyromuscularis relaxes vocal folds; lateral to thyrovocalis
aditus larygnis entryway of larynx, marking entry to vestibule
vocal hyperfunction using excessive adductory force on vocal folds, can result in laryngitis, vocal nodules, contact ulcers, or vocal polyps
Created by: terriers16



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