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
职业资格
Modern scientists divide the process of dying into two stages—clinical or temporary death and biological death. Clinical death o
Modern scientists divide the process of dying into two stages—clinical or temporary death and biological death. Clinical death o
admin
2015-04-27
94
问题
Modern scientists divide the process of dying into two stages—clinical or temporary death and biological death. Clinical death occurs when the vital organs, such as the heart or lungs, have ceased to function, but have not suffered permanent damage. The organism can still be revived. Biological death occurs when changes in the organism lead to the disintegration of vital cells and tissues. Death is then irreversible and final.
Scientists have been seeking a way to prolong the period of clinical death so that the organism can be revived before biological death occurs. The best method developed so far involves cooling of the organism, combined with narcotic sleep. By slowing down the body’s metabolism, cooling delays the processes leading to biological death.
To illustrate how this works, scientists performed an experiment on a six-year-old female monkey called Keta. The scientists put Keta to sleep with a narcotic. Then they surrounded her body with ice-bags and began checking her body temperature. When it had dropped to 28 degrees the scientists began draining blood from its body. The monkey’s blood pressure decreased and an hour later both the heart and breathing stopped; clinical death set in. For twenty minutes Keta remained in this state. Her temperature dropped to 22 degrees. At this point the scientists pumped blood into its body in the direction of the heart and started artificial breathing. After two minutes the monkey’s heart became active once more. After fifteen minutes, spontaneous breathing began, and after four hours Keta opened her eyes and lifted her head. After six hours, when the scientists tried to give her a penicillin injection, Keta seized the syringe and ran with it around the room.
Her behavior differed little from that of a healthy animal.
One possible benefit of the experiment discussed in the passage is______.
选项
A、less crowded cities
B、victory over death
C、protection against fatal injury
D、fewer deaths from heart attacks
答案
D
解析
在该实验中,科学家使母猴麻醉入睡,在它身旁放满冰袋。当它体温达到28度时开始抽血,母猴血压下降,一小时后心跳和呼吸停止,进入临床死亡状态。20分钟后它体温降到22度,科学家向心脏的方向给它输血并进行人工呼吸。过了2分钟,母猴心脏开始跳动;又过了15分钟,呼吸启动;4小时后睁眼抬头;6小时后科学家给它注射青霉素,它就开始活蹦乱跳了。这个实验表明,冷冻法延长临床死亡的好处之一就是可以减少由心脏病突发而引起的死亡。
转载请注明原文地址:https://kaotiyun.com/show/RgCv777K
本试题收录于:
英语学科知识与教学能力题库教师资格分类
0
英语学科知识与教学能力
教师资格
相关试题推荐
历史教师对学生进行学法指导的方式有哪些?
______helpsstudentsfacilitatetheirprocessofaccumulatingvocabulary,broadeningscopeofvision,andincreasingtargetlang
Whichofthefollowingdoesateacherwanthis/herstudentstodevelopifhe/sheguidesthemtotakenoteskeywords,abbrev
______enoughtimeandmoney,theinvestigatorswouldhavebeenabletodiscovermoreevidenceinthiscase.
Thechildrenlinedupandwalkedout______.
Inteachingpronunciation,theteachershouldtellthestudentsthat______canbeusedtoconveymoreimportantmessages.
Whichofthefollowingactivitiesisthemostsuitableforgroupwork?
Exceptionalchildrenaredifferentinsomesignificantwaysfromothersofthesameage,forthesameage,forthesechildrento
Being______ofmoney,shemanagedtosaveenoughforaholiday.
Realitytelevisionisagenreoftelevisionprogrammingwhich,itisclaimed,presentsunscripteddramaticorhumoroussituation
随机试题
处理投诉时,不正确的方法是哪项
肿痛证出现无力之脉的病理为
近年来,很多不法商贩将工业明胶卖给企业制成药用空胶囊,最终流入药品企业,进入患者腹中。由于皮革在工业加工时,要使用含铬的鞣制剂,因此这样制成的胶囊,往往重金属铬超标。经有关部门检测,多家药厂的多个批次药品,所用胶囊重金属铬含量超标,“毒胶囊”事件引起了社会
关于医疗机构临床用血的规定,正确的是
抑郁症如不能及时治疗,有可能会导致老年人尝试自杀以求解脱因()带给自己的痛苦。
下列关于班主任的说法,错误的是()。
以下说法正确的是()。
割裂绝对真理和相对真理的辩证关系,会导致()
下面顶级域名中表示政府机构的是(69)。
HowInterpretersWork?Ⅰ.UnderstandingA.Aboutwordsandexpressions—【1】wordsmaybeleftout:—Ifnotknowi
最新回复
(
0
)