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神经系统是人体生命活动的总指挥部,它可分为中枢神经系统和周围神经系统两部分。中枢神经系统包括脑和脊髓。脑由大脑、小脑和脑干等组成(?)大脑有两个半球,半球表面覆盖着大脑皮质,它是调节人体生理活动的最高中枢,人的心理活动也在这里进行。小脑的主要机能是维持身体平衡,协调肌肉运动。脑干中有一些调节基本生命活动的中枢和联系大脑、小脑与脊髓的传导径路。脊髓是中枢神经的低级部位,是躯体、内脏器官与脑相联系的通道。周围神经系统包括12对脑神经、31对脊神经和植物神经,它们分布于全身,把中枢神经系统与全身各器官联系起来。
Nervous system is the general headquarters of human life activities, which can be divided into central nervous system and peripheral nervous system in two parts. The central nervous system includes the brain and spinal cord. The brain consists of the brain, cerebellum and brain stem (?) The brain has two hemispheres, the hemispherical surface covered with cerebral cortex, it is the highest center of human physiological activity regulation, human psychological activity is also carried out here. The main function of the cerebellum is to maintain body balance and coordinate muscle movement. There are some centers in the brain stem that regulate basic life activities and the pathways that link the brain, cerebellum and spinal cord. Spinal cord is a low-level part of the central nervous system, is the body, visceral organs and brain-related channels. The peripheral nervous system consists of 12 pairs of cranial nerves, 31 pairs of spinal nerves and autonomic nerves, which are distributed throughout the body and connect the central nervous system to various organs of the body.