Adjustments of Laryngeal Apparatus

Adjustments of Laryngeal Apparatus

Abduction of vocal folds
Adduction of vocal folds
Change in length of vocal folds
Change in position of larynx in neck
Control variables
- Laryngeal opposing pressure
- Laryngeal airway resistance
- Glottal size and configuration
- Stiffness and mass of vocal folds
Nervous system control of phonation

Objectives

Describe the actions of the muscles used in abduction and adduction of the vocal folds
Describe the actions of the muscles used in changing the length of the vocal folds
Describe the actions of the muscles used in changing the position of the larynx in the neck
Explain laryngeal opposing pressure and laryngeal airway resistance
Identify the cranial nerves involved in sending motor commands to muscles of the larynx
Explain the role of laryngeal mechanoreceptors in phonation

Resources

SHS 310 Anatomy and Physiology of Human Communication