Assertion: larynx's fold | /r/HasProperty | controlled
Facets:
value: by rocking the thyroid cartilage
type: MANNER
Source sentences:
text: Pitch is altered (caused to either rise or fall) by the changing tenseness and length of the vocal folds, which can be controlled by rocking the thyroid cartilage forward and backward on the cricoid cartilage, (a mechanism known as the 'laryngeal tilt'), and by manipulating the tension of the muscles within the vocal folds.