首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Many adults may think they’re getting enough shut-eye, but in a major sleep study almost 80 percent of respondents admitted to n
Many adults may think they’re getting enough shut-eye, but in a major sleep study almost 80 percent of respondents admitted to n
admin
2019-05-04
97
问题
Many adults may think they’re getting enough shut-eye, but in a major sleep study almost 80 percent of respondents admitted to not getting their prescribed amount of nightly rest. Research shows that adults need an average of seven to nine hours of sleep a night for optimal functionality.
By getting less than six hours of sleep a night, you put yourself at risk for high blood pressure. When you sleep, your heart gets a break and slows down for a significant period of time. But cutting back on sleep means your heart has to work overtime without its allotted break. In constantly doing so, your body must accommodate to its new conditions and elevate your overall daily blood pressure. And the heart isn’t the only organ that is overtaxed by a lack of sleep. The less sleep you get, the less time the brain has to regulate stress hormones, and over time, sleep deprivation could permanently hinder the brain’s ability to regulate these hormones, leading to elevated blood pressure.
Prolonged sleep deprivation has long been associated with diminished immune functions, but researchers have also found a direct correlation between "modest" sleep deprivation—less than six hours—and reduced immune response.
During deep REM sleep, your muscles (except those in the eyes) are essentially immobilized in order to keep you from acting out on your dreams. Unfortunately, this effort your body makes to keep you safe while dreaming can sometimes
backfire
, resulting in sleep paralysis. Sleep paralysis occurs when the brain is aroused from its RMR cycle, but the body remains in its immobilizing state. This can be quite a frightening sensation because, while your mind is slowly regaining consciousness, it has no control over your body, leaving some with a feeling of powerlessness, fear and panic.
Imagine all of your memories are erased. It’s a chilling thought, but that is what a life without sleep would be like. Sleep is essential to the cognitive functions of brain, and without it, our ability to consolidate memories, learn daily tasks, and make decisions is impaired by a large degree. Research has revealed that REM sleep, or dream-sleep, helps solidify the "fragile" memories the brain creates throughout the day so that they can be easily organized and stored in the mind’s long-term cache.
Which of the following statement is TRUE according to the last paragraph?
选项
A、Memories are part of the cognitive functions of the brain.
B、Memories created during the daytime are usually fragile and impaired.
C、You are likely to lose your memories of yesterday after a night’s sleep.
D、Long-term memory cannot be formed without dream-sleep.
答案
A
解析
文章最后一段提到:Sleep is essential to the cognitive functions of the brain,and without it,our ability to consolidate memories,learn daily tasks...从该句话可以推断出记忆是大脑认知功能的一部分,所以答案为[A],其他各项均与原文不符。
转载请注明原文地址:https://kaotiyun.com/show/DMe4777K
0
考研英语二
相关试题推荐
Hisfatherhasbeenworkinghardformanyyearstosupporthimatuniversitysohedidnotwantto______.
Whichofthefollowingcanbethebesttitleofthispassage?Thereasonwhythebraincellsofthepersonwhobothsmokesand
Amajorreasonforconflictintheanimalworldisterritory.Themaleanimal(21)anarea.Thesizeoftheareaissufficientt
Wearelivinginoneofthoseperiodsinhumanhistorywhicharemarkedbyrevolutionarychangesinallofman’sideasandvalue
Mosthumanbeingsactuallydecidebeforetheythink.Whenanyhumanbeing—executive,specializedexpert,orpersoninthestreet
WilltheEuropeanUnionmakeit?Thequestionwouldhavesoundedstrangenotlongago.Noweventheproject’sgreatestcheerlead
HenricIbsen,authoroftheplay"ADoll’sHouse",inwhichapretty,helplesshousewifeabandonsherhusbandandchildrentose
Somefuturologistshaveassumedthatthevastupsurgeofwomenintheworkforcemayportendarejectionofmarriage.Manywomen,
Inthefirstyearsofthe21stcentury,noareaoftheAmericaneconomyhasexcitedmoreemotionthanthepropertymarket.First
[A]Makingfaces[B]Showoff[C]Useacoloreffect[D]Spontaneoussnapshots[E]Creativebackground[F]Natura
随机试题
卧式铣床的主轴安装在铣床床身的上部。()
酚妥拉明扩张血管、降低血压的机理是:
患者因病不能自行调节自己的体位,属于()
北海公司为上海证券交易所A股上市公司,2011年发生了如下有关金融资产转移的交易或事项:(1)2011年1月26日,北海公司在证券市场上出售持有并分类为可供出售金融资产的丁公司债券,所得价款为6000万元。出售时该债券的账面价值为5900万元,
事业单位除工程项目专门借款以外的其他借款计提的利息在财务会计中应当计入其他支出。()
事业单位自行研究开发无形资产的,所发生的研究开发支出作为无形资产的入账成本。()
“收料单”是()。
人脑对直接作用于感觉器官的事物整体的反映是()
公安机关要全力维护社会稳定,积极预防、妥善处置(),依法化解社会矛盾和群众纠纷,巩固和发展安定团结的政治局面。这是公安机关维护社会治安秩序和社会稳定工作的内容之一。
社会治安综合治理的思想建设,就是要使全社会,特别是有关的各级领导,用科学的综合治理的理论与知识武装头脑。()
最新回复
(
0
)