commissure

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侧，然而声门前三分发声区，后黏处黏膜及杓状肌皆保持完好。

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

前柱中，顶盖脊髓束、前庭脊髓束和网状脊髓束会和身体作同侧地下降，但不会穿过及与前白连建立突触。