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第一节物质运输的载体,第二节血流物质运输的管道,第三节物质运输的途径,第四节关注心血管健康,属于重点章节。一、教材特点人体内物质的运输是靠循环系统来完成的。人主要从生物圈中获得食物以及氧气,食物中所具备的营养物质及大气中的氧气在被人体吸收以后,如何才能进一步运输到全身各处的组织细胞中被细胞利用?组织细胞在生活中产生的二氧化碳和其他废物有怎样运离细胞?学生很容易产生这样的疑
The first section of the carrier of substance transport, the second section of the transport of blood flow material, the third section of the material transport pathways, the fourth section concerned with cardiovascular health, is a key chapter. First, the teaching material characteristics The transport of matter in the human body is accomplished by a circulatory system. People mainly from the biosphere to obtain food and oxygen, nutrients in food and the atmosphere of the oxygen in the body after absorption, how can further transport to the whole body tissue cells by cells? Tissue cells in life produce How can carbon dioxide and other waste transport away from cells? Students can easily produce such doubts