首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
共用题干 第二篇High Stress May Damage MemoryAccording to a report issued in May 199...
共用题干 第二篇High Stress May Damage MemoryAccording to a report issued in May 199...
admin
2020-12-24
8
问题
共用题干
第二篇
High Stress May Damage Memory
According to a report issued in May 1998,elderly people who have consistently high
blood levels of cortisol (皮质醇)don't score as well on memory tests as their peers with
lower levels of the stress hormone. What's more,high levels of cortisol are also associated
with shrinking of the hippocampus(海马区),a region of the brain that plays a key role in
learning and memory.
The findings suggest that even cortisol levels in the normal,"healthy"range can
actually accelerate brain aging.
The study results"now provide substantial evidence that long-term exposure to adrenal
(肾上腺的)stress hormones may promote hippocampal aging in normal elderly humans",
write Nada Porter and Philip Landfield.Cortisol is a hormone released in response to stress
by the adrenal glands(腺),which sit on top of the kidneys(肾).
Over a 5-to 6-year period,Dr. Sonia Lupien and his colleagues measured 24-hour
cortisol levels in 51 healthy volunteers,most of whom were in their 70s.
The researchers tested the volunteers' memory on six people in the increasing/high
category and five people in the decreasing/moderate group.The groups did not differ in
tests of immediate memory,but the increasing/high cortisol group had other memory
problems compared with those in the decreasing/moderate group.
The researchers also found that the total volume of the hippocampus in those in the
increasing/high group was 14% lower than those in the decreasing/moderate group,
although there were no differences in other brain regions.
The results suggest that“…brain aging can be accelerated by levels of adrenal
hormones that are not generally regarded as pathological(病态的)and that variation within
this normal range is related to variation in the rate of brain aging",write Porter and
Landfield."This further suggests that chronic stress may accelerate the worsening of the
hippocampus."
选项
When the levels of cortisol go high,the hippocampus
A:may expand.
B:may shrink.
C:may disappear.
D:may function better.
答案
B
解析
转载请注明原文地址:https://ti.zuoweng.com/ti/r8EQKKKQ
相关试题推荐
Thenewmedicineisreportedtobeeffectivetoremedythelungcancer.()A.inter
Hundredsofbuildingswerewreckedbytheearthquake.()A.shakenB.damagedC.fall
We'rehappytoreportthatbusinessisboomingthisyear.()
Marshaconfessedthatsheknewnothingofcomputer.()A.admittedB.reportedC.hop
Ihavenoalternativebuttoreporthimtothelocalpolice.()A.timeB.meanC.ch
共用题干 WhereDidAlltheShipsGo?TheBermudaTriangle(三角区)isone________(1)t...
共用题干 WhereDidAlltheShipsGo?TheBermudaTriangle(三角区)isone________(1)t...
共用题干 WhereDidAlltheShipsGo?TheBermudaTriangle(三角区)isone________(1)t...
共用题干 WhereDidAlltheShipsGo?TheBermudaTriangle(三角区)isone________(1)t...
共用题干 WhereDidAlltheShipsGo?TheBermudaTriangle(三角区)isone________(1)t...
随机试题
患者,男,7岁,4个恒中切牙已萌出,为反关系,决定使用上颌牙垫矫治器矫治切牙反。
器官低温灌注和保存,使用连续灌注法的灌注液量是 A、400ml B、500m
房地产经纪行业的()是房地产经纪人员为委托人提供劳务服务的行为准则,也是房地
劳动保障行政部门有权对违反劳动保障法律、法规或者规章的行为进行调查。根据《劳动保
已知某次高考的数学成绩服从正态分布,从这个总体中随即抽取n=37的样本,并计算得
宫颈黏液涂片干燥后,镜下可见典型羊齿状结晶,直接受哪种激素影响A.促卵泡素B.孕激素C.生乳素D.雌激素E.促黄体素
国有股权非上市转让交易价款,金额较大一次付清有困难,可以采用分期付款方式,首付价款不得低于()。A.20%B.15%C.30%D.5%
维生素D缺乏性手足搐搦症的隐性体征是A喉痉挛BKemig(克氏)征阳性Crudzinski(克氏)征阳性DTrousseau(陶瑟)征阳性Ea
甲国籍渔船“玛丽”轮在乙国专属经济区进行捕鱼作业时,乙国海上执法船赶来制止,随后将“玛丽”轮带回乙国港口。甲乙两国均是《联合国海洋法公约》的缔约国,且两...
下列项目中,不属于增值税视同销售的是( )。A、将购进的货物无偿赠送他人B、将购进的货物奖励给职工C、将委托加工收回的货物用于本企业职工浴室的在建工程