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中考复习资料包:保基础,更能冲高分

  • 2026-04-14 11:36:45
中考复习资料包:保基础,更能冲高分

中考复习资料包：保基础，更能冲高分

适用年级和教材版本：秋璐老师的《呼吸系统+人体代谢废物排出》中考复习课件

🧨【课件内容介绍】

🍞本课件是北师大版初中生物中考复习资料，围绕呼吸系统和人体代谢废物排出两大核心模块展开，内容精炼、考点集中，专为中考复习设计，通俗易懂、实用性强。

🥐课件第一部分聚焦呼吸系统，先明确呼吸作用的实质是细胞内有机物氧化分解、释放能量，为生命活动供能。

🥖接着梳理呼吸系统组成：鼻、咽、喉、气管、支气管构成呼吸道，是气体进出通道；肺是气体交换主要场所，肺泡壁薄、数量多、外绕毛细血管，适合高效气体交换。

🥨重点讲解呼吸全过程：通过呼吸运动实现肺通气，肋间肌和膈肌收缩完成吸气、舒张完成呼气；再通过气体扩散完成肺泡与血液、血液与组织细胞的气体交换，实现氧气运输和二氧化碳排出。

🥯第二部分讲解代谢废物的排出，明确排泄是排出细胞代谢产生的尿素、多余水和无机盐，排遗是排出食物残渣。重点介绍泌尿系统：肾脏形成尿液，输尿管输送尿液，膀胱储存尿液，尿道排出尿液。

🥞详解尿液形成的两个关键步骤：肾小球和肾囊内壁的滤过作用形成原尿，肾小管的重吸收作用将全部葡萄糖、大部分水和部分无机盐回收，剩余物质形成尿液。同时补充皮肤通过汗腺排出部分水、无机盐和尿素，完善排泄途径。

🧇课件搭配大量中考真题、图表解析和易错点总结，讲练结合，帮助学生快速掌握核心考点、突破难点，是高效备战中考生物的优质复习资料。

#呼吸系统#人体代谢废物排出#课件#初中#生物#中考#复习#资料

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  138. /yingpanguazai/ssd/ssd1/www/i.67808.cn/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/i.67808.cn/runtime/temp/21b433f16374cbe8b5fe06f82f71202c.php ( 12.06 KB )
  140. /yingpanguazai/ssd/ssd1/www/i.67808.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000627s ] mysql:host=127.0.0.1;port=3306;dbname=i_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000757s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000337s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000264s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000495s ]
  6. SELECT * FROM `set` [ RunTime:0.000201s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000580s ]
  8. SELECT * FROM `article` WHERE `id` = 464048 LIMIT 1 [ RunTime:0.000792s ]
  9. UPDATE `article` SET `lasttime` = 1776222616 WHERE `id` = 464048 [ RunTime:0.008806s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000827s ]
  11. SELECT * FROM `article` WHERE `id` < 464048 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001052s ]
  12. SELECT * FROM `article` WHERE `id` > 464048 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001082s ]
  13. SELECT * FROM `article` WHERE `id` < 464048 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.009482s ]
  14. SELECT * FROM `article` WHERE `id` < 464048 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.014604s ]
  15. SELECT * FROM `article` WHERE `id` < 464048 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002259s ]
0.125814s