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
109
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.
What effect of sleep deprivation on human mind and body are discussed in this passage?
选项
A、High blood pressure, a toughened immune system, sleep paralysis, and memory
B、Blood pressure, immune system, sleep paralysis, and long-term memory.
C、Blood pressure, immune system, the brain and the body, and memory.
D、High blood pressure, a weakened immune system, sleep paralysis, and memory
答案
D
解析
文章第二段是讲睡眠不足可导致高血压(high pressure),第三段是讲睡眠不足会降低免疫系统(weakened immune system),第四段讨论睡眠瘫痪(sleep paralysis),最后一段是讲记忆丧失(memory loss),所以答案为[D]。
转载请注明原文地址:https://kaotiyun.com/show/JMe4777K
0
考研英语二
相关试题推荐
StudythefollowingdrawingcarefullyandWriteanessayinwhichyoushould:1)describethedrawing,2)interpretthemeaning
Excitement,fatigue,andanxietycanallbedetectedfromsomeone’sblinks,accordingtopsychologistJohnStern(21)Washington
Amajorreasonforconflictintheanimalworldisterritory.Themaleanimal(21)anarea.Thesizeoftheareaissufficientt
ManyAmericansregardthejurysystemasaconcreteexpressionofcrucialdemocraticvalues,includingtheprinciplesthatallc
WholesalepricesinJulyrosemoresharplythanexpectedandatafasterratethanconsumerprices,【1】thatbusinesseswerestill
Wearelivinginoneofthoseperiodsinhumanhistorywhicharemarkedbyrevolutionarychangesinallofman’sideasandvalue
OlympicGamesareheldeveryfouryearsatadifferentsite,inwhichathletes【1】differentnationscompeteagainsteachotherin
Accordingtoarecentsurveyonmoneyandrelationships,36percentofpeoplearekeepingabankaccountfromtheirpartner.Whi
Beautyhasalwaysbeenregardedassomethingpraiseworthy.Almosteveryonethinksattractivepeoplearehappierandhealthier,h
随机试题
5岁小儿,因脸色较苍白就诊。平素饮食规律,但时常有上腹痛,有时有黑便。体查:皮肤、巩膜无黄染,口唇较苍白,心、肺无异常发现,肝右肋下3.5cm,脾左肋下2cm,Hb70g/L,WBC8.5×109/L,N0.65,L0.37,M0.02,
商务文件中的备忘录内容应包括
群体
材料1:“每个人是手段同时又是目的,而且只有成为他人的手段才能达到自己的目的,并且只有达到自己的目的才能成为他人的手段,——这种相互关联是一个必然的事实。”材料2:中国的“杂交水稻之父"袁隆平教授这描述它的梦想:“我做个一个梦,梦见杂交水稻的茎秆像高粱一
下列关于Ig的叙述,正确的是
女,28岁。经产妇,人工流产2次。妊娠37周,晨起发现阴道流血,多于月经量,无腹痛。查体:P80次/分,BP110/70mmHg,胎方位LOA,胎头高浮,胎心率150次/分,耻骨联合上可闻及血管音。本例最适合的处理是
在进行润滑油、密封油及控制油管道的油清洗前,应进行的工作有()。
分类方法有多种形式,无论如何分类,主要是满足道路的()功能。
在建设工程项目决策阶段,建设单位职业健康安全与环境管理的任务是()。
设M=“30”,执行命令?&M+20后,其结果是______。
最新回复
(
0
)