Division in Anatomy and Developmental Biology, Department of Oral Biology, Yonsei University College of Dentistry, Room 601, 50 Yonseiro, Seodaemun-gu, Seoul, 120-752, South Korea.
Muscle Nerve. 2013 Oct;48(4):545-50. doi: 10.1002/mus.23875. Epub 2013 Aug 27.
The trigeminal nerve (CN V) supplies mostly sensory innervation to the face, and the facial nerve (CN VII) conveys primarily motor fibers. The aim of this study was to elucidate their distributions and anastomoses.
Fourteen specimens of hemisectioned faces were gathered from human cadavers and stained with Sihler staining.
The temporal (Tbr), zygomatic (Zbr), and buccal (Bbr) branches of CN VII formed trigeminofacial anastomoses in the ocular area. Communications were observed between the supraorbital nerve and the Tbr (85.7%), the infraorbital nerve and the Bbr (100%) and Zbr (28.6%), and the zygomaticofacial nerve and the Zbr (41.7%). Anastomoses were formed between the supratrochlear nerve and the Tbr (57.1%) and Bbr (50%), and the infratrochlear nerve and the Bbr (85.7%).
Motor and sensory axons to the face contribute to trigeminofacial anastomoses, which may play key roles in subtle movements of muscles of facial expression.
三叉神经（CN V）主要为面部提供感觉神经支配，面神经（CN VII）主要传递运动纤维。本研究旨在阐明它们的分布和吻合。
从人体尸体中收集了 14 个半面标本，并进行了 Sihler 染色。
面神经的颞支（Tbr）、颧支（Zbr）和颊支（Bbr）在眼部区域形成了三叉神经面吻合。观察到眶上神经与 Tbr（85.7%）、眶下神经与 Bbr（100%）和 Zbr（28.6%）以及颧面神经与 Zbr（41.7%）之间存在通讯。滑车上神经与 Tbr（57.1%）和 Bbr（50%）以及鼻睫神经与 Bbr（85.7%）之间形成吻合。
面部的运动和感觉轴突有助于形成三叉神经面吻合，这可能对面部表情肌的细微运动起着关键作用。
