chapter  76
Laryngotracheal stenosis in adults
ByGuri S. Sandhu, Reza Nouraei
Pages 12

INTRODUCTION The upper aerodigestive tract, larynx, trachea and bronchi form the conduit between the external environment and the lungs to facilitate gas exchange. The larynx acts to protect the airway from aspiration during swallowing. It is the primary organ for phonation but also provides important sensory feedback and movements that are critical to the control of ventilation. The narrowest site of the adult airway is the glottis, whereas in infants it is the subglottis.