三叉神经是第五对脑神经。它又分三大支:①眼神经——向前入眼眶,发支至眼球和额部皮肤。管理眼球的普通感觉及眼裂以上额部皮肤感觉。②上颌神经——向前入眼眶,经眶下孔至面部,管理口裂和眼裂之间的面部皮肤感觉。在未出眶下孔前,沿途还发支支配鼻腔、口腔上部粘膜及上颌牙齿等处的感觉。③下颌神经——向下穿颅底出颅后,分支支配舌前2/3及口腔部粘膜的感觉。并分出下齿槽神经,管理下颌 Trigeminal nerve is the fifth cranial nerve. It is divided into three branches: â ’¢ oculomotor - forward into the eyes, hair and eye to forehead and forehead skin. The common sense of managing the eyeballs and the eye area above the forehead skin feeling. ② maxillary nerve - forward into the orbit, through the infraorbital foramen to the face, manage the facial skin between the mouth and split mouth feeling. Before the infraorbital foramen, also along the way to support the inner ear nasal cavity, upper oral mucosa and maxillary teeth and other feelings. ③ mandibular nerve - down through the skull base out of the skull, the branch dominates the tongue 2/3 and oral mucosa feeling. And under the alveolar nerve, the management of mandibular