Resonance - VP adjustments

Resonance - velopharyngeal adjustments

Velum is a muscular hydrostat
Movements of the pharynx
Closure of the velopharyngeal port
Control variables of velopharyngeal function
- Airway resistance
- Sphincter compression
- Acoustical impedance
Neural control of velopharyngeal function

Objectives

Define muscular hydrostat
Describe movements of the pharynx including muscles used
Describe movements of the velum during closure and opening of the velopharyngeal port including muscles used
Describe several strategies used for closing the velopharyngeal port
Define airway resistance as applied to velopharyngeal function and describe the factors that influence airway resistance
Explain how velopharyngeal sphincter compression is changed, and describe situations requiring low and high compression
Define acoustic impedance as applied to velopharyngeal function, and describe what determines how much sound energy will flow through the oral and nasal cavities
List the cranial nerves involved in sending motor commands and sensory information for velopharyngeal muscles

Resources

SHS 310 Anatomy and Physiology of Human Communication