基础医学英语课件：Unit 2 The Heart.ppt

《基础医学英语课件：Unit 2 The Heart.ppt》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、UNIT2PassageATheHeartKeytermsventricle---ventricular(adj.)atrium---atria(pl.)---atrial(adj.)systole---systolic(adj.)diastole---diastolic(adj.)di-:expandcardiacadj.oftheheartskeletalmuscle骨骼肌smoothmuscle平滑肌striatedadj.横纹的intercalateddisc闰盘thePurkinjefiber浦肯雅纤维theBundleofHis房室束atri

2、al心房的sinus-窦sinoatrialventricularatriumatrioventricularseptumseparate,divideseptala.隔膜的scope:instrumentstetho:cheststethoscopeoxygenateoxygenatedblood含氧血deoxygenatedblood缺氧血smallarteryarteriolebronchioleveinvenulesmallvary,changevaricoseartery---arterialvein---venousaorta---aorti

3、cTheanatomyoftheHeartReadPara.11.compareskeletalmuscles,smoothmusclesandcardiacmuscles.2.Whatisuniqueaboutcardiacmuscles?skeletalmusclevoluntarystriatedsmoothmuscleinvoluntarysmoothcardiacmuscleinvoluntarystriatedcross-striation:横纹myocyte：肌细胞nuclei:核(nucleus的复数)intercalateddiscWh

4、atarethefunctionsoftheatria?Whatarethefunctionsoftheventricles?Whatarethefunctionsofthevalves?QuestionsforParagraph21.Theatriaareresponsibleforreceivingbloodfromtheveins...2.Ventriclesforcethebloodawayfromtheheart...3.Valvesallowbloodtoflowonlyinonedirection.Whatinitiateimpulsesi

5、ntheheart?WhatisthemajorfunctionofthePurkinjefibers?Andhowdotheywork?Whatisthepacemakeroftheheart?Andwhy?QuestionsforParagraph31.TheSAandtheAVinitiateimpulses.2.ThePurkinjefibersformapathwayforconductionoftheimpulsewhichensuresthattheheartmusclecellscontractinthemostefficientpatt

6、ern.3.TheSAnode.BecausethecellsintheSAnodecontractthemosttimesperminute,andcardiacmusclecellsareconnectedtoeachotherbyintercalateddiscs.房室束左右束支Whatissystole?Whatisdiastole?QuestionsforParagraph4diastolesystole1.Howdoesthepulmonarycircuitwork?2.Howdoesthesystemiccircuitwork?3.What

7、kindofblooddoarteriesandveinscarryrespectively?ThepulmonaryandsystemiccircuitsQuestionsforParagraph5-61.Inthepulmonarycircuit,bloodleavestheheartthroughthepulmonaryarteries,goestothelungs,andreturnstotheheartthroughthepulmonaryveins.2.Inthesystemiccircuit,bloodleavestheheartthrou

8、ghtheaorta,goestoalltheorgansofthebodyth