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

喉上神支为运动神，支配环甲肌和部分杓横肌。

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

此过只影响杓状软骨内，然而门前三分之二的，后黏合处的黏膜及杓状肌皆保持完好。