输送血液的泵心脏第二课时血液循环的途径ppt课件

1、七年级下册七年级下册 生物学生物学福州华南实验中学福州华南实验中学 艾先艾先54123三三四四一二3复复 习习 旧旧 知知 识识1充溢动脉血的心腔是充溢动脉血的心腔是 和和 ；2充溢静脉血的心腔是充溢静脉血的心腔是 和和 ；3心房与心室之间防止血液倒流的构造是心房与心室之间防止血液倒流的构造是 ；心室；心室与动脉之间防止血液倒流的构造是与动脉之间防止血液倒流的构造是 。4从心脏壁来看，从心脏壁来看， 壁最厚。壁最厚。 二二一一四四三三左心房左心房右心室右心室左心室左心室右心房右心房左心室左心室房室瓣房室瓣动脉瓣动脉瓣跟红细胞一同来体验血液循环之旅跟红细胞一同来体验血液循环之旅1、小小红细胞走完

2、全程，几进几出心脏？、小小红细胞走完全程，几进几出心脏？2、它走过哪些路？到了哪些地方？、它走过哪些路？到了哪些地方？3、它都做了些什么事？、它都做了些什么事？ 1、体循环和肺循环的起点和终点各是什么部位？ 2、体循环和肺循环经过什么构造获得联络？ 3、在体循环和肺循环中，血液的成分各发生了什么变化？发生变化的部位各在哪里？ 4、尝试画出体循环和肺循环的途径。小组活动小组活动血液成分的变化血液成分的变化各级各级静脉静脉上、上、下腔下腔静脉静脉右右心心房房组织细胞组织细胞O2CO2养料养料废物废物2、肺循环、肺循环右右心心室室肺肺动动脉脉肺部毛肺部毛细血管细血管肺肺静静脉脉左左心心房房肺肺 泡泡

3、CO2O21、体循环、体循环循环途径循环途径左左心心室室主主动动脉脉各级各级动脉动脉全身全身毛细毛细血管血管新学案：新学案： P59 第第4、8小题；小题； P60 第第12小题；小题； P61 第第15小题。小题。 作作 业业hQeMbJ7G4D1z-w*t!qYmVjSgOdLaI6F3B0y)v%s#pXlUiRfNcK8H5E2A+x(u$rZnWkThPeMbJ7G4C1z-w&t!qYmVjRgOdL9I6F3B0y(v%s#oXlUiQfNbK8H5D2A+x*u$qZnWkShPeMaJ7F4C1z)w&t!pYmVjRgOcL9I6E3B0y(v%r#oXlT

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