chapter  59
Physiology of the larynx
ByLesley Mathieson, Paul Carding
Pages 8

INTRODUCTION This chapter is concerned with the functions of the larynx, with particular emphasis on its role as the source of the voice. The motor and sensory laryngeal nerve supply is described and the neuroanatomy of phonation is described in greater detail. A concise section on the role of the larynx in swallowing, coughing and effort closure is followed by a more extensive description of the biomechanics of phonation. It should be noted that it is essential to be familiar with the considerable potential range of laryngeal adjustments that can occur in normal phonation, in order to avoid drawing inappropriate conclusions about phonatory physiology in a clinical setting.