6 The Nervous System

THE NERVOUS SYSTEM

神经系统

THINKING BIG Hello! I'm your brain. I'm a big part of your nervous system. The nervous system controls all activities in your body. The different parts of your body must work together precisely to carry out even the simplest action. Your nervous system coordinates all these different tasks!

胸怀大志你好！我是你的大脑。 我是你神经系统的重要组成部分。 神经系统控制着你身体的所有活动。 即使是最简单的动作，你身体的不同部位也必须精确地协同工作。 你的神经系统协调所有这些不同的任务！

It directs your movements... ...focuses your eyes... ...commands your muscles to contract... pum pum pum pum ...senses your surroundings, and feels your pain! Zip Without a nervous system, life as you know it would be impossible! catch

它指导你的动作…… …集中你的眼睛... ...命令你的肌肉收缩… 咚咚咚咚……感知你周围的环境，感受你的痛苦！没有神经系统，你所知道的生活将是不可能的！抓

THE NERVOUS SYSTEM If you look really close... ...you can see that the human nervous system is made up of billions of special cells called neurons. Neurons work together to form tissues! Cordlike bundles of neuron fibers are called nerves. Nerves carry messages from your sense organs, such as your eyes, ears, nose, and touch sensors in your skin.

神经系统如果你仔细观察…… …你可以看到，人类的神经系统是由数十亿个叫做神经元的特殊细胞组成的。 神经元一起工作形成组织！束状的神经元纤维被称为神经。 神经传递来自感觉器官的信息，比如你的眼睛、耳朵、鼻子和皮肤上的触觉传感器。

Some of these messages travel along a pathway of nerves until they reach your spinal cord. From there, the messages travel to the brain. The network of nerves in your body enables you to react to your surroundings in an instant!

其中一些信息沿着神经通路传播，直到到达你的脊髓。 从那里，信息传递到大脑。 你体内的神经网络使你能够在瞬间对周围环境做出反应！

PARTS OF THE NERVOUS SYSTEM 1 The nervous system is divided into two main parts: The central nervous system, or the cns... 2 ...and the peripheral nervous system, or the PNS. The PNS is made up of all the nerves that carry messages to and from the central nervous system to the rest of your body.

神经系统的组成神经系统主要分为两个部分：中枢神经系统，或cns… 2…以及周围神经系统，简称PNS。 PNS由所有的神经组成，这些神经将信息从中枢神经系统传递到身体的其他部位。