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1、上托友之家，找托福高分的秘密！资料开放下载，全站免费不收钱！http://www.TuofuMe.com2012年新托福考试听力加试全解析PARTA经典加试“托友之家”编者按：“经典加试”指的是考试中经常、反复出现的托福考试阅读加试文章和题目。请大家务必认真对待，对于你考试很有帮助！1、神经元细胞【内容重现】Glialcellisthoughttohelpthegrowthofneurons.However,scientistsaccidentallydiscoverthatglial’samountismuchmorethantheneuron.Soglialattractpeo
2、ple’sattention.Theyusechemicalconductortocommunicatewithothers.Soglialtoneuron,gton,gtog,ntonareallavailable.Inthepastglialwasthoughttosupportnervecell.Glialcells(神经胶质细胞)andNeurons（神经细胞）Glialcells,commonlycalledneurogliaorsimplyglia,arenon-neuronalcellsthatprovidesupportandnutrition,maintainho
3、meostasis,formmyelin,andparticipateinsignaltransmissioninthenervoussystem.Inthehumanbrain,gliaareestimatedtooutnumberneuronsbyabout10to1.[1]Glialcellsprovidesupportandprotectionforneurons,theothermaintypeofcellinthecentralnervoussystem.Theyarethusknownasthe"glue"胶水ofthenervoussystem.Thefourmai
4、nfunctionsofglialcellsaretosurroundneuronsandholdtheminplace固定,tosupplynutrientsandoxygentoneurons供养,toinsulateoneneuronfromanother隔开,andtodestroypathogensandremovedeadneurons破坏病菌，转移死N.Gliawasdiscoveredin1856bythepathologistRudolfVirchowinhissearchfora'connectivetissue'inthebrain大脑的连接组织.Thehum
5、anbraincontainsabouttentimesmoreglialcellsthanneurons.[1]Followingitsdiscoveryinthelate19thcentury,thisfactunderwentsignificantmediadistortion,emergingasthefamousmythclaimingthat"weareusingonly10%ofourbrain".Theroleofglialcellsasmanagersofcommunicationsinthesynapse突触gap,thusmodifyinglearningpa
6、ce,hasbeendiscoveredonlyveryrecentlyInadditiontoneurons,thenervoussystemispopulatedwithanothercategoryofcells,glialcells.Glialcellsareapproximately10timesmoreplentifulthanneurons,butsincetheyareapproximatelyone-tenththesize,theytakeupequalsize,gliais托友之家版权所有，转载请注明~1~http://www.TuofuMe.com托友之家精
7、彩文章汇总2012年2月8日更新上托友之家，找托福高分的秘密！资料开放下载，全站免费不收钱！置顶热帖：1、网上最全TPO下载（包含图片、Word、PDF、PPS、软件版）！下载地址：http://www.tuofume.com/prep-materials/tpo/131.html2、新托福450篇满分作文汇编下载地址：http://www.tuofume.com/prep-materials/writing/148.html3、经典资料选编：《制胜新托福口语》下载地
