MD, Fellow Master Degree. Universidade do Estado do Pará - Postgraduate Program in Surgery and Experimental Research Medicine - Department of Experimental Surgery - Belem (PA), Brazil.
Graduate student. Universidade do Estado do Pará - School of Medicine - Department of Experimental Surgery - Belém (PA), Brazil.
Acta Cir Bras. 2022 Oct 28;37(8):e370803. doi: 10.1590/acb370803. eCollection 2022.
To describe the microsurgical anatomical aspects of the extratemporal facial nerve of Wistar rats under a high-definition video system.
Ten male Wistar rats (12-15 weeks old), without veterinary diseases, weighing 220-280 g, were used in this study. All animals in this study were submitted to the same protocol and by the same surgeon. A 10-mm incision was made below the bony prominence of the right or left ear, and extended towards the angle of the mandible. The dissection was performed and the main branches of the facial nerve were dissected.
The main trunk of the facial nerve has a length of 0.88 ± 0.10 mm and a length of 3.81 ± 1.03 mm, measured from its emergence from the stylomastoid foramen to its bifurcation. Seven branches originating from the facial nerve were identified: posterior auricular, posterior cervical, cervical, mandibular, buccal, temporal, and zygomatic.
The anatomy of the facial nerve is comparable to that of humans, with some variations. The most observed anatomical division was the distribution in posterior auricular, posterior cervical, cervical, mandibular, buccal, temporal, and zygomatic branches. There is no statistical difference between the thickness and distance of the structures compared to the contralateral side.
在高清视频系统下描述 Wistar 大鼠颞外面神经的显微解剖学特征。
本研究使用了 10 只雄性 Wistar 大鼠（12-15 周龄），体重 220-280g，无兽医疾病。所有动物均按照相同的方案由同一位外科医生进行处理。在耳骨突出下方做一个 10mm 的切口，向颌角方向延伸。进行解剖并分离面神经的主要分支。
面神经主干长 0.88±0.10mm，从茎乳孔穿出至分叉处长 3.81±1.03mm。共识别出 7 支发自面神经的分支：耳后、颈后、颈前、下颌、颊、颞和颧支。
面神经的解剖结构与人类相似，但存在一些差异。最常见的解剖分支是分布于耳后、颈后、颈前、下颌、颊、颞和颧支。与对侧相比，这些结构的厚度和距离没有统计学差异。
