在动物课的教学中,讲解两栖动物肺的构造时,使用干制标本容易取得较理想的效果。 1.取体形较大的蟾蜍或蛙解剖,找到口腔深处的喉门,用小解剖剪从腹部向前剪至下颌部,当剪到胸部时,注意不要剪破气管室和喉门.从喉门往肺里冲气,只要鼓起来即可.这时肺和短小的气管室就看得比较清楚了。用小 In the teaching of animal classes, when explaining the structure of amphibian lungs, it is easy to obtain the desired effect by using dried specimens. 1. To take a large toad or frog anatomy, find the throat of the mouth deep, with a small anatomical scissors cut from the abdomen to the lower jaw forward, when cut to the chest, be careful not to cut the tracheal and larynx. Throat gushed to the lungs, as long as the drum can be, when the lungs and short tracheal chamber to see more clearly. With small