velopharyngeal closure
Pronunciation: vee-lo-far-in-JEE-al KLOH-zhur
Complete sealing of the nasal cavity from the oral cavity achieved by velum elevation and pharyngeal wall constriction.
Full Definition
Velopharyngeal closure is the complete anatomical separation of the nasal and oral cavities achieved through coordinated movement of the soft palate (velum) and pharyngeal walls. This closure is essential for normal speech production, particularly for oral consonants and vowels that require oral airflow and pressure buildup. Inadequate velopharyngeal closure results in hypernasality, nasal air emission, and reduced oral pressure for speech sounds. Assessment of velopharyngeal closure involves perceptual, acoustic, and instrumental measures to determine the adequacy of the velopharyngeal mechanism.
Usage
Usage note: No hyphenation in standard usage. VP closure is acceptable abbreviation in clinical notes.
In Context
- "Adequate velopharyngeal closure was confirmed through nasometric assessment showing appropriate oral-nasal balance." — Speech assessment report
- "The patient demonstrated inconsistent velopharyngeal closure resulting in variable hypernasality during connected speech." — Clinical observation notes