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
9
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
It appears that when the hippocampus shrinks due to high levels of cortisol,other brain regions
A:may change dramatically.
B:may stop functioning.
C:may remain unaffected.
D:may be seriously damaged,
答案
C
解析
转载请注明原文地址:https://ti.zuoweng.com/ti/W8EQKKKQ
相关试题推荐
Thenewmedicineisreportedtobeeffectivetoremedythelungcancer.()A.inter
Marshaconfessedthatsheknewnothingofcomputer.()A.admittedB.reportedC.hop
Marshaconfessedthatsheknewnothingofcomputer.()A.admittedB.reportedC.hop
Hundredsofbuildingswerewreckedbytheearthquake.(2009年真题)()A.damagedB.shak
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...
共用题干 WhereDidAlltheShipsGo?TheBermudaTriangle(三角区)isone________(1)t...
随机试题
下列关于车辆购置税退税的说法中,错误的是()。 A.因质量原因车辆被退回经销商
水雾喷头是水喷雾灭火系统的主要部件之一,它的平面布置方式可为矩形或菱形。当按菱形
腮腺内神经血管排列分为纵行和横行两组,不属于纵行组的是() A.面神经 B.
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。
下列关于项目建议书说法错误的是( )。
有关产褥感染下列哪项是正确的
根据《固体废物污染防治法》的规定,以下禁止建设工业固体废物集中贮存、处置物设施的
我国导游全国性考试始于( )年。A.1988B.1989C.1990D.1991
患者,女性,28岁,患甲状腺功能亢进症。入院时体温37°C,脉搏101次/分,血压130/70mmHg,拟行双侧甲状腺次全切除术。术前按常规服碘剂。 ...
关于施工预算与施工图预算的说法,错误的是()。A.施工预算的编制以施工定额为主要依据,施工图预算的编制以预算定额为主要依据B.施工预算是投标报价的主要依据C