第四章 常见疾病营养 第一节 代谢疾病与营养精品.ppt

Diagram 50% 24% 10% 16% Products Description of the company’s products Service Description of the company’s service Technology Description of the company’s technology Market Description of the company’s market 50% 24% 16% 10% ThemeGallery is a Design Digital Content Contents mall developed by Guild Design Inc. Diagram Your text in here Your text in here Your text in here Your text in here - Your text in here - Your text in here - Your text in here - Your text in here - Your text in here - Your text in here - Your text in here - Your text in here - Your text in here ThemeGallery is a Design Digital Content Contents mall developed by Guild Design Inc. - Your text in here - Your text in here - Your text in here - Your text in here - Your text in here - Your text in here - Your text in here - Your text in here - Your text in here Diagram 10% 60% 30% Your text in here Your text in here Your text in here Your text in here Text in here Your text in here Your text in here Text in here Your text in here Your text in here Your text in here Your text in here Text in here Click to add Text ThemeGallery is a Design Digital Content Contents mall developed by Guild Design Inc. Diagram 2003 2004 2006 2006 statistics title 2006 statistics title (unit : %) (unit : %) * 2006 Statistics agency statistics * 2006 Statistics agency statistics 50% 2003 2004 2006 90% 15% 96% 35% 70% Contents of the product, and please fill it out. ThemeGallery is a Design Digital Content Contents mall developed by Guild Design Inc. 说教材 B E C D A 课程标准 教材的作用 教学目标 教材的地位 教学重点、难点 维生素A来源、降解、吸收和作用 植物源前维生素A 植物提供前维生素A－胡萝卜素，有9～22％被吸收 动物源前维生素A 动物提供的维生素A形式为视黄醇（10％）和视黄基酯（90％），有70～90被吸收 在小肠大多数胡萝卜素被降解为视黄醇 乳糜颗粒 当摄入适量时90％维生素A贮存在肝脏中 细胞分化 免疫 视力 生殖 骨骼生长 维生素D来源与作用 在小肠维生素D 随脂肪一起被吸收 食物中维生素D被收入乳糜颗粒经淋巴系统和血液进入肝脏 紫外光 7－脱氫胆固醇 甲状旁腺激素 在甲状旁腺激素刺激下，肾脏将1,25-二羟胆钙化醇 1,25-二羟胆钙化醇 紫外光使得7-脱氫胆固醇转换为胆钙化醇 胆钙化醇 肝脏将胆钙化醇转换为25-二羟胆钙化醇 食物中的麦角固醇（维生素D2 ，D3） 二羟胆钙化醇增强钙和磷的吸收 小肠 骨骼 其他组织 二羟胆钙化醇调控骨的钙化 二羟胆钙化醇抑制细胞增生和增