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不言而喻,在教学过程中根据教材内容之重点和疑难点来适当地运用直观教具,在一定程度上不仅补充了教师语言直观的不足,而且对于学生形成正确的概念,便于接受和巩固知识均有重要的意义。在这次实习中,我们简易的制作了一个肾单位模型,对讲清肾脏之显微结构与机能,感到有一定的效果。兹介绍如下,不妥处望读者指正。肾脏是人和脊椎动物的重要排泄器官。它不仅排除新新代谢的废物(如尿素、尿酸、肌酐等)使有机体免受中毒;危及生命活动的进行,而也调节着机体内的水分与鹽类,使血液成分维持恒定。显然,这种完善的生理机制是与肾脏的基本结构——肾单位有关。我们是这样制作肾单位模型的:
It is self-evident that in the teaching process, visual teaching aids are properly used according to the focus and difficulty of the teaching materials. This not only supplements teachers’ language intuitional deficiencies to a certain extent, but also forms correct concepts for students to accept and consolidate knowledge. All have important significance. In this internship, we simply created a model of a nephron, and felt certain effect on the structure and function of the kidney. I hereby introduce you as follows. The kidney is an important excretory organ for humans and vertebrates. It not only excludes new and newly metabolized waste (such as urea, uric acid, creatinine, etc.) to protect organisms from poisoning, endanger life activities, but also regulate the body’s water and salts, so that the blood components remain constant. Obviously, this perfect physiological mechanism is related to the basic structure of the kidney, the nephron. We made the nephron model like this: