初中生理卫生第九章(神經系統)第二节“脊髓”一课的教材中,在阐述脊神經背根和腹根(教本上是称为后根和前根)的作用时,是通过切断蛙一侧背根和对侧腹根的实驗來說明的。的确,如果教师能够在课前准备好,先对动物进行好手术处理,而在课堂上是直接通过实验演示,让学生亲自看到实驗的结果,再从实驗结果來进行分析講解,那么将会大大增强教学过程中的 Junior high school physiology Chapter IX (Nervous System) Section II “spinal cord” a textbook, in explaining the dorsal root and ventral root of the dorsal root (teaching is known as the posterior root and anterior root) role is through the cut Frog dorsal root and contralateral abdominal root experiments to illustrate. Indeed, if the teacher can be prepared before class, the animal should be treated first, and in the class, the demonstration should be conducted directly, so that students can see the results of the experiment in person and analyze the results from the experimental results. Then, Greatly enhance the teaching process