Takahashi Y, Yorifuji H
Second Department of Anatomy, National Defense Medical College, Saitama, Japan.
Ann Anat. 1997 Feb;179(1):75-81. doi: 10.1016/S0940-9602(97)80142-2.
The topographic anatomical study on the distribution pattern of the superior laryngeal nerve (SLN) in the larynx was studied in thirteen adult dogs. The ramus posterior of the SLN divides into two branches; the interarytenoid branch (IA) and the pharyngoesophageal branch (PE). The IA on both sides connect to the cricoid ganglion (CG) in the midline at the cranial border of the cricoid cartilage. Posterior glottic branches arise from the IA, run over the cricoid cartilage, and distribute fibers to the posterior wall of the glottis. Every specimen observed in the present study possessed the CG and the posterior glottic branches. The subglottic branch derives from the IA near the cricoid ganglion, and passes through the cricoid foramen (CF) (Yoshida, 1986). The subglottic branch distributes fibers to the subglottic mucous membrane covering the cricothyreoid ligament. The CF and the subglottic branch were observed on both sides of seven specimens out of thirteen dogs. They were also observed on only one side in three specimens, and were not detectable on either side in the three remaining specimens. The silver impregnation applied in the semimicroscopic dissection facilitated identification of the precise localization and the topographic arrangement of ganglia and nerve bundles.
对13只成年犬喉部喉上神经（SLN）分布模式进行了局部解剖学研究。喉上神经后支分为两支：杓间支（IA）和咽食管支（PE）。两侧的杓间支在环状软骨颅缘中线处与环状神经节（CG）相连。声门后支起自杓间支，越过环状软骨，将纤维分布至声门后壁。本研究观察的每个标本均有环状神经节和声门后支。声门下支起自靠近环状神经节的杓间支，穿过环状孔（CF）（吉田，1986）。声门下支将纤维分布至覆盖环甲膜的声门下黏膜。在13只犬中的7只标本两侧均观察到环状孔和声门下支。在3只标本中仅一侧观察到，在其余3只标本两侧均未检测到。在半显微解剖中应用的银浸染有助于识别神经节和神经束的精确定位和局部排列。
