Rödel R, Lang J
Klinik und Poliklinik für Hals-Nasen-Ohrenkrankheiten, Universität Göttingen.
HNO. 1996 Oct;44(10):572-6. doi: 10.1007/s001060050056.
The available descriptions of the innervation of the depressor anguli oris muscle and the peripheral distribution of the terminal branches of the marginal mandibular branch and buccal branches of the facial nerve are conflicting. Based upon dissections of 25 head halves we investigated the courses of the terminal branches of the marginal mandibular and buccal nerves. The marginal mandibular and buccal branches were found to form in the area of the mental foramen the mental and buccal plexus innervating the mimetic muscles by terminal nerve branches in the cheek area. The buccal plexus supplied the muscles of upper lip, cheek and nose. Furthermore, the depressor anguli oris muscle was also supplied by the buccal plexus. We also observed connections between marginal mandibular branch and mental nerve and between buccal branches of the facial nerve and buccal nerve of the trigeminal nerve. In case of injury to the marginal mandibular branch the depressor anguli oris muscle is not affected. Injury to the nerve branches of the depressor anguli oris muscle can be caused by operations or lesions in the area of the posterior border of this muscle.
关于降口角肌的神经支配以及面神经下颌缘支和颊支终末分支的周围分布，现有描述存在矛盾。基于对25个半侧头部的解剖，我们研究了下颌缘支和颊神经终末分支的走行。发现下颌缘支和颊支在颏孔区域形成颏神经丛和颊神经丛，通过颊部区域的终末神经分支支配表情肌。颊神经丛支配上唇、颊部和鼻部的肌肉。此外，降口角肌也由颊神经丛支配。我们还观察到下颌缘支与颏神经之间以及面神经颊支与三叉神经颊神经之间的连接。当下颌缘支受损时，降口角肌不受影响。降口角肌神经分支的损伤可由该肌肉后缘区域的手术或病变引起。
