laryngeal system Flashcards
which stage of sound production is the larynx associated with?
phonation - modification of airflow
how many vibrations p/second is average?
about 150 p/s - higher for higher pitch
why can we not produce lateral labial sounds?
because air can’t be released down the side of the oral cavity if our lips are an articulator
velum
valve controlling where the airflow goes
what is the difference between raised and lowered velum?
raised = air escapes through oral cavity (nasal cavity blocked) lowered = air escapes through nasal cavity
impossible nasals
anything further back than uvular will block the airflow before it can get to the nasal cavity
oral/ nasal simultaneous
lowered velum but not a full oral closure
glottis
space between vocal folds
vocal folds
tissue stretching from arytenoid cartilage (posteriorly) and thyroid cartilage (anteriorly)
cricoid cartilage
complete cartilage ring around the trachea - inside the thyroid but outside the vocal folds and attached to ayrtenoids. posterior ring in diagrams.
thyroid cartilage
anterior ring - ‘adam’s apple’. Outside the cricoid
what causes vocal fold vibrations?
contractions of the arytenoid cartilage