四川省成都市高中生物第一章人体的内环境与稳态1.1细胞生活的环境导学案(无答案)新人教版必修3.doc

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1、11.1 细胞生活的环境班级: 姓名: 小组: 评价:【导学流程】基础感知一、细胞外液的理化性质(1)渗透压:指溶液中 对水的吸引力。大小取决于 血浆渗透压大小主要与 、 的含量有关。细胞外液渗透压的主要来源于 和 。人的血浆渗透压约为 ,相当于 的渗透压。(2)酸碱度(pH):正常人的血浆近 ,pH 为 ,血浆的 pH 之所以能够保持稳定,与它含有 、 等离子有关。(3)温度:人体温度一般维持在 左右。二、内环境是细胞与外界环境进行物质交换的媒介2【迁移应用】1.剧烈活动后,大量乳酸进入血液,血浆 pH 值会A 大于 7.35-7.45 B 小于 7.35-7.45 C 维持在 7.35-7

2、.45 D 稳定在 3-42与人体新陈代谢有直接关系的四大系统是消化系统 呼吸系统泌尿系统生殖系统运动系统循环系统神经系统( )A B C D3.组织液大量积累在组织间隙会导致组织水肿,下列各项不引起组织水肿的是营养不良,血浆蛋白含量减少B花粉过敏引起毛细血管通透性增加C肾小球肾炎导致蛋白尿D食物过咸导致血浆渗透压增高4.关于人体内环境中 pH 调节叙述错误的是( )A人体血液 pH 通常在 77.53 之间B血液中乳酸过多时,就与 NaHCO3发生反应,生成乳酸钠和 H2CO3C血液中 Na2CO3过多时,就与 H2CO3结合形成 NaHCO3D血液中 CO2过多会刺激呼吸中枢,促进呼吸加深加快将 CO2排出5一个健康的人若进食较多的糖和食盐,那么他排出的尿液中所含的葡萄糖和盐分的量A盐增多,糖未增多 B糖增多,盐未增多C两者都增多 D两者都未增多36正常情况下,以下物质属于人体内环境组成成分的是血红蛋白 葡萄糖 无机盐 激素 尿素A. B C D探究未知请写出你的疑惑

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