glottis
Pronunciation: GLAH-tis
The opening between the vocal folds in the larynx, which controls airflow and voice production.
Full Definition
The glottis is the space between the vocal folds (vocal cords) within the larynx that regulates airflow from the lungs and enables voice production. During normal breathing, the glottis remains open to allow free airflow. For phonation, the vocal folds adduct (come together), narrowing or closing the glottal opening to create the conditions necessary for vocal fold vibration. The size and configuration of the glottal opening affects voice quality, loudness, and breathing patterns. Speech pathologists assess glottal function when evaluating voice disorders, breathing problems, or swallowing difficulties. Abnormal glottal closure patterns can result in breathy voice, excessive vocal effort, or aspiration risks during swallowing.
Usage
Usage note: Not to be confused with 'epiglottis' which is the cartilage structure above the glottis.
In Context
- "Laryngoscopy revealed incomplete glottal closure during phonation attempts." — Voice evaluation report
- "The patient demonstrated poor glottal control affecting voice quality and cough effectiveness." — Swallowing assessment