血液循环途径教案张红梅

血液循环途径教案张红梅 教案 设计 领导形象设计圆作业设计ao工艺污水处理厂设计附属工程施工组织设计清扫机器人结构设计 : 姓名:张红梅 单位:周口八中 2010年3月23日 application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check 血液循环途径 一、 教学目标 知识目标: 1、了解血液循环的概念。 2、掌握体循环，肺循环的途径，血液成分的变化及其意义。 过程与方法: 1、通过学习血液循环的途径，培养学生的观察能力及归纳，总结的思维能力。 2、通过 分析 定性数据统计分析pdf销售业绩分析模板建筑结构震害分析销售进度分析表京东商城竞争战略分析 血液循环的血液成分变化，培养学生的分析思维能力。 情感目标: 感悟血液循环过程中蕴藏的生命魅力———生命的高度有序性;形成结构与功能相适应的生命科学观。 二、 教学重点 血液循环的途径及血液成分的变化 三、 教学难点 血液在循环途径中成分的变化 四、 教学用具 制作幻灯片、有关录像 、视频 五、 教学方法 1创设情景法。 2多媒体演示法。 3讲解法 、图解法。 4启发诱导，参与讨论。 六、 学习方法 application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check 1小组合作讨论 2复习、阅读、观察、归纳 七、 教学过程 (一) 引入新课 同学们请看这幅图画(幻灯片)，大家见过吗,这就是我们日常生活中生病打针的情形，那么药液进入我们体内，经过什么样的途径到达患处，达到治疗的效果呢,今天我们就带着这个问题来探索 一下血液循环的途径。 (二) 复习 由于心脏是血液循环的动力，下面我们复习一下上节课与心脏有关的三个问题(看幻灯片)。 1) 心脏分哪四个腔, 2) 在这四个腔上分别连有哪些血管, 3) 血液在这四个腔中是如何流动的, 让同学们根据幻灯片上的心脏结构模式图回答。 (三) 讲述新课 心脏的这些结构特点，保证了血液顺利通过心脏并获得动力继续进行循环。 血液循环概念: 教师:讲解 血液在心脏和全身的血管所组成的密闭的管道系统内循环地流动叫做血液循环。 学生:观察视频材料(血液循环讲解过程)，思考问题 application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check 1)血液循环包括几个途径。每个途径的主要功能是什么, 教师:归纳: 人的血液循环分体循环和肺循环。肺循环为了获取氧气，体循环为了输送氧气。 2)演示录像了解人的血液循环途径: 先观察体循环:指导观察: (1)体循环的起点、止点及大致路径(或体循环是由心脏的哪一腔开始,血液流经何处,最后流回心脏的哪一腔,) (2)在体循环过程中，血液成分有哪些变化,在何处发生的变化, 反馈观察情况。 教师利用幻灯片进一步讲述体循环:血液由左心室压入主动脉，再流经全身各级动脉，毛细血管网和各级静脉，最后汇入上下腔静脉，然后流入右心房 ，这一过程叫做体循环。在这一循环途径中，当血液流经组织间的毛细血管网时，就与周围的组织细胞之间进行物质交换，血液中的氧气和养料进入细胞，细胞产生的二氧化碳和其他废物进入血液，并运走。经过这样的交换，原来含氧丰富的鲜红色的动脉血就变成了含氧少，含二氧化碳丰富的静脉血 继续观察录像——肺循环 指导观察: (3)肺循环的起点、止点及大致路径(或肺循环是由心脏的哪一腔开始,血液流经何处,最后流回心脏的哪一腔,) (4)在肺循环过程中，血液成分有哪些变化,在何处发生的变化, 反馈观察情况。 让学生利用幻灯片血液循环模式图回答以上问题(复述肺循环) 血液首先由右心室出发，流入肺动脉，流经肺部的毛细血管网，再由肺静脉流回左心房的过程。在这一循环过程中，当血液流经肺部毛细血管网时，血液与肺泡内的气体进行交换。肺泡内的氧气进入application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check 血液，血液中的二氧化碳进入肺泡，经过人们的呼吸排出体外，经过肺部交换后，含氧少颜色暗红的静脉血就变成了含氧多，颜色鲜红的动脉血。 (四)小组活动 我们从整体上了解了血液循环的过程，下面请同学们结合课本上的血液循环模式图进行讨论、归纳、总结。同学们都喜欢旅游吧～下面我们就分组进行旅游，各组自行选择路线，但有下面几个原则要遵守。 1) 我们把心脏作为“大本营” 2) 沿途经过的“景点”以及发生的事情都要有所记载。 3) 最后老师请各组派代 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 介绍“旅游见闻”。 思考:血液在运输过程中突然停止，会出现什么样的后果,(学生回答，最后老师利用幻灯片给出答案) 血液与组织间的物质交换，一旦血液在运输过程中出现突然停止，就会出现相应细胞缺氧，细胞产生的二氧化碳等废物不能运走，影响细胞正常的生理活动。 在此基础上让同学们总结血液循环的意义(看课本) (五)本课小结 本课时学习的主要内容是人体的血液循环，它可分为体循环和肺循环两部分:体循环由左心室始，到右心房止，血液微动脉血;肺循环由右心室始，到左心房止，血液变为静脉血。这两大循环在心脏处交汇，他们相互联系，同时进行。 (六) 板书设计 第二节 血液循环 application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check 1) 血液循环概念: 2) 血液循环途径 体循环:左心室?主动脉?全身的毛细血管网?上下腔静脉?右心房 ——————————————————————————— 肺循环:左心房? 肺静脉? 肺部毛细血管网? 肺动脉? 右心室 3) 血液循环过程中的变化 CO2 体循环:组织细胞 全身的毛细血管网 O2 O2 肺循环:肺 泡 肺部毛细血管网 CO2 4) 气体交换前后血液的变化 体循环: 动脉血 静脉血 肺循环: 静脉血 动脉血 5) 血液循环的意义:给组织细胞不断运来氧及时运走二氧化碳 废物。 (七)、作业设计 1)流过主动脉的血是( )，流过肺动脉的血是( )，流过上下腔静脉的血是( )，流过肺静脉的血是( )。 A，动脉血 B,静脉血 2)从左心室出发的血流向( )，从右心室出发的血流向( ) A，主动脉 B肺动脉 C肺静脉 D上下腔静脉 3)一个同学在运动时右手的一个手指受伤，伤口红肿，为了消炎，application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check 医生在这个同学左臂注射了青霉素。这些药品是怎样运输到伤口处的,说出药物运输的途径。 (八)、教后反思 本节课教师以启发诱导为前提，充分利用知识间的联系，引导学生利用旧知识组建出新知识，使新知识的引入自然、顺利。教师在教学中不是直接给出结论，而是通过一系列设问启发学生通过自己的思考得出结论，这有利于增强学生的学习自信。 application; infection and antibacterial drug of clinical application; transfusion refers to levy; nutrition support of adapted card and clinical application; common life support technology (as cycle breathing support, and nutrition support,) and emergency technology of application; common guardianship instrument using. Look: shock, cardiac respiratory arrest and acute organ failure, systemic inflammatory response syndrome and severe infection and multiple organ dysfunction syndrome (MODS), severe disturbance of body fluid environment such as critical theory and progress of the illness. 2. basic requirements (1) species and cases of study requirements: severe pneumonia in disease-disease myocardial infarction ... 3. high requirements (1) learning disease species: disease species disease species image radiation: rheumatic heart congenital heart intestinal Crohn's (Crohn) disease intestinal tuberculosis bile duct cancer chronic pancreatic inflammatory urinary system stone urinary system tumor adrenal disease thyroid disease cranial within infection nervous system tumor nuclear medical: Digest road bleeding explicit like brain blood flow perfusion explicit like testicular blood pool explicit like salivary glands explicit like (2) clinical knowledge, and skills requirements: understand various image check