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
外语
Modern scientists divide the process of dying into two phases--clinical or temporary death and biological death. Clinical death
Modern scientists divide the process of dying into two phases--clinical or temporary death and biological death. Clinical death
admin
2010-05-26
37
问题
Modern scientists divide the process of dying into two phases--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 reanimated (使复活) before biological death occurs. The best method developed so far involves cooling of the organism, combined with narcotic (催眠性的) 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 baboon (狒狒) called Keta. The scientist put Keta to sleep with a narcotic (麻醉剂 ). 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 an artery (动脉). The monkey’s blood pressure decreased and an hour later both the heart and respiration 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 an artery in the direction of the heart and started artificial respiration. After two minutes the baboon’s heart became active once more. After fifteen minutes, spontaneous respiration 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 characteristic of clinical death is ______.
选项
A、lasting damage to the tissues
B、destruction of the lungs
C、temporary non-functioning of the heart
D、that the organism cannot be reanimated
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/3EV7777K
0
大学英语四级
相关试题推荐
Infamilieswithtwoworkingparents,fathersmayhavemoreimpactonachild’slanguagedevelopmentthanmothers,anewstudys
Peoplewhoarehitbylightningandsurviveoftenhavelong-termeffects.Thesemayincludememoryloss,sleepdisorders,muscle
Peoplewhoarehitbylightningandsurviveoftenhavelong-termeffects.Thesemayincludememoryloss,sleepdisorders,muscle
Themodernageisanageofelectricity.Peoplearesousedtoelectriclights,radios,televisions,andtelephonesthatitish
WhenIwentofftocollege,Igotonepieceofadvicefrommyfather:"Itdoesn’tmatterwhatcoursesyoutake,justfindthegr
A、Awaitressinarestaurant.B、AclerkinthePostandTelegramOffice.C、Asaleswomaninadepartmentstore.D、Aclerkinthe
ThetraditionalAmericanThanksgivingDaycelebrationgoesbackto1621.InthatyearaspecialfeastwaspreparedinPlymouth,
A、Spring.B、Winter.C、Autumn.D、Summer.D对话中谈到很多人认为加拿大的夏季最适合娱乐和放松,因此答案是D。
A、Intheafternoon.B、Inthemorning.C、Intheevening.D、Atnight.B
Acoeducational(男女合校的)schoolOfferschildrennothinglessthanatrueversionofsocietyinminiature(缩影).Boysandgirlsare
随机试题
体内应保持正氮平衡的人群是________。
患者,男,60岁。素体虚寒,近日偶遇风寒,出现胸腹胀闷作痛,胃痛,呕吐,伴有咳嗽,虚喘,腰膝酸软。医生建议选择沉香配伍应用。沉香的正确用法是
患者胃脘灼痛,痛势急迫,烦躁易怒,泛酸嘈杂,口干口苦。舌红苔黄,脉弦或弦数。该患者所患疾病的脏腑是()。
下列属于各种等级的监理单位所能承担的工程类型的是()。
金智众联咨询公司是一家专门向银行业金融机构提供风险管理、模型系统开发顾问、规划服务的专业化公司。该公司拥有众多涉及银行不同领域的专家,根据不同银行客户项目需求,抽调相关专家组成项目组提供服务。针对上述信息,下列表述正确的有()。
美术创作最重要的思维方式是()。
交管局要求司机在通过某特定路段时,在白天也要像晚上一样使用大灯,结果发现这条路上的年事故发生率比从前降低了15%。他们得出结论说:如果在全市范围内都推行该项规定会同样地降低事故发生率。以下哪项如果为真,最能支持上述论证的结论?
下列有关函数重载的叙述中,错误的是()。
SilencePleaseIfthereisonegroupofworkersacrosstheWesternworldwhowillbegladthatChristmasisover,thatgroup
IntheUnitedStates,theseatsintheSenateareallocatedtodifferentstates
最新回复
(
0
)