輸送血液的泵心臟第二課時(shí)血液循環(huán)的途徑ppt課件

1、七年級(jí)下冊(cè)七年級(jí)下冊(cè) 生物學(xué)生物學(xué)福州華南實(shí)驗(yàn)中學(xué)福州華南實(shí)驗(yàn)中學(xué) 艾先艾先54123三三四四一二3復(fù)復(fù) 習(xí)習(xí) 舊舊 知知 識(shí)識(shí)1充溢動(dòng)脈血的心腔是充溢動(dòng)脈血的心腔是 和和 ；2充溢靜脈血的心腔是充溢靜脈血的心腔是 和和 ；3心房與心室之間防止血液倒流的構(gòu)造是心房與心室之間防止血液倒流的構(gòu)造是 ；心室；心室與動(dòng)脈之間防止血液倒流的構(gòu)造是與動(dòng)脈之間防止血液倒流的構(gòu)造是 。4從心臟壁來(lái)看，從心臟壁來(lái)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動(dòng)脈瓣動(dòng)脈瓣跟紅細(xì)胞一同來(lái)體驗(yàn)血液循環(huán)之旅跟紅細(xì)胞一同來(lái)體驗(yàn)血液循環(huán)之旅1、小小紅細(xì)胞走完

2、全程，幾進(jìn)幾出心臟？、小小紅細(xì)胞走完全程，幾進(jìn)幾出心臟？2、它走過(guò)哪些路？到了哪些地方？、它走過(guò)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、體循環(huán)和肺循環(huán)的起點(diǎn)和終點(diǎn)各是什么部位？ 2、體循環(huán)和肺循環(huán)經(jīng)過(guò)什么構(gòu)造獲得聯(lián)絡(luò)？ 3、在體循環(huán)和肺循環(huán)中，血液的成分各發(fā)生了什么變化？發(fā)生變化的部位各在哪里？ 4、嘗試畫(huà)出體循環(huán)和肺循環(huán)的途徑。小組活動(dòng)小組活動(dòng)血液成分的變化血液成分的變化各級(jí)各級(jí)靜脈靜脈上、上、下腔下腔靜脈靜脈右右心心房房組織細(xì)胞組織細(xì)胞O2CO2養(yǎng)料養(yǎng)料廢物廢物2、肺循環(huán)、肺循環(huán)右右心心室室肺肺動(dòng)動(dòng)脈脈肺部毛肺部毛細(xì)血管細(xì)血管肺肺靜靜脈脈左左心心房房肺肺 泡泡

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