论文部分内容阅读
人们常说,脑子越用越灵活。但是,人体的各种生理活动都有一定限度,超过限度,大脑就会发出种种疲劳的信号。当前体力上的劳累已经不再是疲劳的主要原因,而现代科技的发展,工作节奏的加快,所造成的人们的脑力疲劳和心理疲劳,则是危害人体健康的一个重要因素。在人体所有的器官中,大脑是最容易发生疲劳的,这是因为脑部神经最多,思维活动频繁,营养物质需求量大而本身储存量少的缘故。据测定,大脑需要的血液占心脏血液总排
People often say that the more flexible the mind is. However, the body’s various physiological activities have a certain limit, beyond the limit, the brain will send all kinds of fatigue signal. The current physical exertion is no longer the main cause of fatigue. However, the development of modern science and technology, the acceleration of the pace of work, mental fatigue and psychological fatigue caused by people are an important factor that endanger human health. In all organs of the human body, the brain is most prone to fatigue due to the largest number of nerves in the brain, frequent mental activities, large quantities of nutrients, and low levels of stored matter. It is determined that the brain needs the blood total heart blood row