Anatomy and physiology of phonation Flashcards
What serves as the anterior attachment of the vocal folds?
anterior commissure
What serves as the posterior attachment of the vocal folds?
vocal process
What influences laryngeal movement in the vertical plane (up and down)?
movement of the hyoid bone
What allows the arytenoid cartilage to swivel so that the vocal folds can adduct/abduct?
cricoarytenoid joint
What components form the vocal fold cover?
epithelium and superficial layer of lamina propria (SLLP)
What forces facilitate vocal fold oscillation during phonation?
transglottal pressure gradients and flow vertices
How might the presence of a glottal gap influence the resulting acoustic sound spectrum?
It would increase the amount of noise
What influences fundamental frequency of phonation?
interplay between cricothyroid and thyroarytenoid
What plays the least important role during phonation?
epiglottis
What term represents a deviation in voice quality?
dysphonia
What is the primary sensory nerve for the larynx?
the internal branch of the superior laryngeal nerve (of the vagus)
What suprahyoid muscles help to elevate the larynx?
geniohyoid and mylohyoid
The opening of the larynx, which is the space encircled by the aryepiglottic folds is known as…
laryngeal vestibule
The space in-between the left and right true VF is known as…
glottis
Supraglottal pressures generated by manipulations in the vocal tract act as a force on the vocal which influences vibration. This force is called…
inertive reactance
What is a non-biological role of the larynx?
Serving as a vibratory source for voice production
The vocal folds consist of a layered structure, functionally divided into the cover, vocal ligament, and body. What layers make up the vocal ligament
intermediate and deep lamina propria
What muscles adduct the vocal folds?
lateral cricoarytenoid, interarytenoid, and thyroarytenoid (muscularis).
What muscle is a tensor for the vocal folds?
cricothyroid