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，然而声门前三分之二的发声区，后黏合处的黏膜杓状肌皆保持完好。

The tectospinal, vestibulospinal and reticulospinal descend ipsilaterally in the anterior column, but do not synapse across the anterior white commissure.

在前柱中，顶盖脊、前庭脊网状脊会身体作同地下降，但不会穿过与前白连合建立突触。