摘要
本文对24只成年健康家兔面神经颞内外段在手术放大镜(×3.5)下进行初步解剖观察。结果表明:家兔面神经位置远较人类浅。面神经出茎乳孔处粗约1～2mm,随即分为3大分支,一支为人类没有的耳后神经,另两支为背支和腹支。耳后神经主要分布耳背后肌及耳廓凸面皮肤。背、腹支穿经腮腺。前者主要分支有颞支和颧支;腹支位置较背支浅,在距口角12～14mm处与背支合并,后又分开并分为上、下颊支。颞内段面神经(垂直段和水平段)测量数据提示位置较为恒定。
The present study showed the preliminary anatomical observation of the facial nerve (FN) of 24 healthy adult rabbits, pertainind to extratemporal portion as well as intratemporal port-ion, The observation was carried out under the operation magnifier (×3.5). The intermediate nerve and the fibers to the stapedius were not included in the present study. The results demonstrated that the location of rabbit FN is much more superficial than the human’s,and the calibre of the nerve is not so fine as we expected. Emerging from the cranium via the stylomastoid foramen, FN divides into 3 main branches, which are the posterior auric-ular (P, AUR) not present in human, the dorsal and ventral branches. Posterior AUR innervates primarily the posterior auricular muscles and the convex surface of the Slciu of the external ear. The dorsal and ventral branches turn anteriory to enter the parotid gland. The former bifurcates primarily into temporal and zygomatic branches; the latter locates more superficial than the dorsal branch. The ventral branch merges with the dorsal at 12-14 mm from the mouth corner, and then it separates from the combined trunk and forms two divlsions: the upper buccal division and the lower division. The intratemporal portion of FN can be considered as more constant from the statistics.
出处
《华西医讯》
CAS
北大核心
1989年第2期199-201,共3页
