Reidenbach M M
Department of Anatomy, Rheinische Friedrich-Wilhelms-University, Bonn, Germany.
Eur Arch Otorhinolaryngol. 1998;255(7):365-7. doi: 10.1007/s004050050078.
The muscular tissue of the vestibular folds was investigated in plastinated serial sections of 32 normal adult larynges. Three muscular systems could be distinguished. A posterolateral muscle layer was found to be developed at the lateral margin of the posterior part of the vestibular fold. Its fibers extended in a sagittal direction, and their contraction probably resulted in an adduction of the entire tissue of the vestibular fold towards the midline. Within the anterior part of the vestibular fold, an anterolateral muscle sheet was seen to attach to the thyroid cartilage. An anteromedial muscular system consisted of scattered groups of muscle fibers situated medially and dorsally to the laryngeal ventricle and saccule. These fibers were presumed to exert a downward pressure on the vestibular folds, in addition to an adductor function. According to clinical experience, adductor movements of the vestibular folds can be trained, even in cases with a recurrent laryngeal nerve lesion, in order to produce a compensatory voice. Thus, the muscles of the vestibular folds are probably innervated by the superior laryngeal nerve.
在32个正常成年喉部的塑化连续切片中，对前庭襞的肌肉组织进行了研究。可区分出三个肌肉系统。在前庭襞后部的外侧边缘发现有一个后外侧肌层。其纤维沿矢状方向延伸，其收缩可能导致前庭襞的整个组织向中线内收。在前庭襞的前部，可见一个前外侧肌片附着于甲状软骨。一个前内侧肌肉系统由位于喉室和喉囊内侧和背侧的散在肌纤维群组成。除了内收功能外，这些纤维还被认为会对前庭襞施加向下的压力。根据临床经验，即使在喉返神经损伤的情况下，也可以训练前庭襞的内收运动，以产生代偿性声音。因此，前庭襞的肌肉可能由喉上神经支配。
