CSD-2259 Chapter Notes - Chapter 11.4: Cleft Lip And Cleft Palate, Vocal Range, Murmured Voice

• School: App State
• Department: Communication Sciences and Disorders
• Course: CSD-2259
• Professor: Sheila Temple

Document Summary

The extent tho which the column of air is allowed to eneter the nasal and oral cavities is controlled at the velopharyngeal port, or back of the oral cavity where the oral and nasal cavities meet. The velopharyngeal mechanism is the coupling of the velum. Typically rests in an open position with velum lowered. When we speak, velum rises to close the port, channeling airflow and voice into the oral cavity. Velopharyngeal dysfunction occurs when the port closes imperfectly because of structural or muscual problems. Anatomical problems: problems such as those that occur after cleft palate repair or as a congenitcal malformation may prevent the velopharyngeal port from closing. Neurophysiological disorders: disorders than undermine neuromuscular functioning can affect neurological control of the muscles responsible for velopharyngeal port closure. Allergics: cause hyponasal speech and can affect the smooth functioning of the velopharyngeal port through swelling and congestion. Causes hypernasility: velopharyngeal port remains open, allowing too much resonance in the nasal cavity.