最新人教版高二英语选修七unit3vocabulary教学讲义ppt.ppt

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1、人教版高二英语选修七unit3vocabularyLearninggoals1.Gettoknowthenewwordsandexpressions.2.Trytousethemtodosomereading,speakingandwritingasfreelyaspossible.1.urgen．强烈欲望，迫切要求；vt.催促，力劝；强烈要求urgesth.on/uponsb....向某人强调某事（的重要性）urgesb.todosth.催促/极力主张某人做某事urgesb.intodoing催促某人做某事urge/Itisurgedthatsb.(should)

2、dosth.主张…；力劝...haveanurgetodosth.渴望做某事[即学即练](1)Heurgedonthestudentstheimportanceofworkinghard.他向学生们力言用功的重要。(2)Theyurgedthatweshouldtakethesesteps.他们极力主张我们采取这些步骤。(3)MyfriendsurgedthatIshouldapplyforthejob.朋友们力劝我申请那份工作。1.Rememberthewordsamdexpressions.2.FinishexercisesonXUNPING.Homework

3、Goodbye!Thankyou!弥散性血管内凝血Chapter11中山医学院病理生理教研室邓宇斌DIC一、DIC原因和发病机制二、促进DIC发生发展的因素（诱发困素）三、DIC的分期和分型四、DIC的功能代谢变化（病理生理变化）五、DIC防治的病理生理基础第一节概述1.血液的凝固与抗凝流动性血液运输载体方向性内（Ⅻ）凝血系统凝血外（Ⅲ）血小板：粘聚释凝↑／抗凝↓→栓塞失衡凝↓／抗凝↑→出血倾向2.DIC的概念出血病因微血栓后休克致凝继发纤溶亢进果栓塞溶血>120种病：感染、肿瘤、产科意外IntroductionDICischaracterizedbytheacti

4、vationofthecoagulationsystemwithresultantconsumptionofavarietyofcoagulationproteinsandplatelets,whichresultsinhemorrhagicdiathesisandischemicinjurytovarioustissues.1.BloodCoagulationItispropagatedbyanenzymaticeventstermedcoagulationcascade.ContactfactorsandtheintrinsicpathwayTissuefact

5、orandextrinsicpathway2.FibrinolysisItistheresultoftheactionofplasmin,aproteolyticenzymeproducedfromaninertplasmaprecursor(plasminogen)bytheactionofvarioussubstancestermedplasminogenactivators.HumoralplasminogenactivatorsTissueplasminogenactivatorsFibrinorfibrinogendegradationproductsFD

6、P(Significantbiologicalactivity)FragmentsX,YandE(potentantithrombins)FragmentsYandD(inhibitfibrinpolymerization)ⅡaⅡaⅢaPCAPCTM+Ⅱ灭活PS(+)C4bC4bPS(-)酶纤溶FDP酶ATPC抗APCTM+Ⅱa凝PSPGI2VECTM第二节DIC的病因发病学一、发病原因及机理1.VEC广泛受损⑴原因感染炎症、免疫损伤（抗磷脂综合征）高低温、放射损伤缺血缺氧酸中毒EtiologyofDIC1.acuteDIC(1)septicemia(2)sever

7、etrauma(3)obstetricaccidents(4)shock2.subacuteDIC(1)malignanttumors(2)retaineddeadfetus3.chronicDIC(1)gianthemangioma(2)systemiclupuserythematosus(SLE)⑵机理胶原暴露凝↑VEC释放Ⅲ受损合成PGI2↓→TXA2↑抗凝↓表达TM↓→APC↓2.血细胞大量受损⑴RBC受损感染：疟疾原因：溶血G6PDase↓：蚕豆病免疫损伤：异型输血红细胞素（Ⅲ）机理：释ADP→P聚集⑵WBC激活或受损坏死白血病细胞→释Ⅲ原因化疗受损机