我们观察蝗虫的头部,可以看到1对大的复眼,1对触须,还有强大的咀嚼式口器。但是,它的鼻子在哪里呢?我们用放大镜仔细观察蝗虫,可以看到它的胸部和腹部两侧各有一行排列整齐的小孔。这叫做气门,共有10对,2对位于胸部,8对位于腹部。气门是气体进出蝗虫身体的门户,由气门片控制气门的张开与闭合。从气门向里延伸,是分布在体内器官中纵横交错的气管和气囊,这是蝗虫体内运送气体的管道,其末端是进行气体交换的场所。当腹部扩张吸气的时候,前4对气门张开,后6对气门关 We observe the locust’s head, you can see a pair of large compound eyes, a pair of tentacles, as well as powerful chewing mouthparts. But where is its nose? We carefully observed the locusts with a magnifying glass, and we can see that there was a row of neatly arranged small holes on each side of the chest and abdomen. This is called the valve, a total of 10 pairs, 2 pairs in the chest, 8 pairs in the abdomen. The valve is the gateway to the body of the locust, which controls the opening and closing of the valve by the flap. Extending from the valve, it is a trachea and balloon distributed criss-crossing in the organs of the body. This is the pipe that carries the gas inside the locust and the end is the place for gas exchange. When the abdomen expands inspiratory time, the first four pairs of valves open, after six pairs of valves closed