The External Laryngeal Nerve is a motor nerve, innervating the cricothyroid muscle and part of the transverse arytenoid muscle.

喉上侧支为运动，支配甲肌和部分杓横肌。

The anterior two third of glottis (phonatory portion), mucosa over the posterior commissure and the arytenoids muscle all remain intact.

此过程只影响杓状软内侧，然而声门前三分之二的发声区，后黏合处的黏膜及杓状肌皆保持完好。