在做解剖青蛙(或蟾蜍)实验时,一般都采用破坏脑脊髓的方法处死青蛙。这种方法学生不易掌握,有时青蛙出现死亡,影响实验效果。在解剖过程中,有的青蛙仍然乱动,也影响观察。下面介绍几种简便的方法。 1酒精麻醉用镊子夹取一浸透95%酒精的棉球,塞入青蛙口腔中,然后可观察外形。三四分钟后,青蛙便瘫倒不动,这时打开体腔,观察内部结构,心跳正常,肺部鼓起,效果极佳。 In the dissection of the frog (or toad) experiment, the general use of the brain to destroy the spinal cord method of killing the frog. This method is not easy to grasp students, and sometimes the frog died, affecting the experimental results. During the dissection, some frogs are still moving, but also affect the observation. Here are some simple ways. 1 alcohol anesthesia Tweezers gripping a 95% alcohol soaked cotton balls, stuffed into the frog mouth, and then observe the shape. Three or four minutes later, the frog would be paralyzed, then open the body cavity, observe the internal structure, normal heartbeat, lungs, the effect is excellent.