脑神经是直接与脑相连的周围神经,共计12对,按照脑神经的分布和结构特点分为感觉性、运动性和混合性3种,其中1、2、8对为感觉性神经;3、4、 6、11、12对为运动性神经;5、7、9、10对为混合性神经。12对脑神经在结构,以及发生、演变过程中各有所不同,有其自身特点。此外,与脊神经相比既有相似之处,又有若干不同之处,比脊神经多出3种特 Brain nerve is directly connected with the brain surrounding the nerve, a total of 12 pairs, in accordance with the distribution and structural characteristics of the cranial nerve is divided into three kinds of sensory, motor and mixed, of which 1,2,8 pairs of sensory nerve; 3, 4, 6, 11, 12 pairs of motor nerve; 5,7,9,10 pairs of mixed nerve. 12 pairs of cranial nerves in the structure, as well as the occurrence and evolution of different, have their own characteristics. In addition, compared with the spinal nerve have similarities, there are a number of differences, more than three kinds of special than the spinal nerve