Assertion: isthmus's fold | /r/HasProperty | approximated in phonation
Facets:
Source sentences:
text: Three levels or tiers in the larynx can be closed by sphincteric muscles: (1) the inlet, which is closed during deglutition and protects the respiratory passages against the invasion of food; (2) the vestibular folds, closure of which traps air in the trachea and makes possible an increase of intrathoracic pressure (as in coughing) or intra-abdominal pressure (as in micturition and defecation); and (3) the vocal folds, which are approximated in phonation.