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我们人类是用肺进行呼吸的,动物也都是用肺呼吸的吗?你吃过海蜇吧?海蜇和蠕虫,身体里没有任何器官,它们靠表皮进行呼吸,吸收溶解在水里的氧。蚯蚓和肯蛙也是从表皮吸收氧气,排出二氧化碳。昆虫的腹部有大量的气孔,每个气孔就是一个导管,叫「呼吸管」,和人的气管相似。鳝鱼呢,它能够用口腔和喉部的表皮直接呼吸空气。一条条鳝鱼一在浅水中竖直前半截身子,就是为了用口在水面上吞吸空气。泥鳅除用鳃呼吸外,也能用肠子进行呼吸。如果你把泥鳅养在凉开水里,
We human beings breathe in the lungs, animals also breathe in the lungs? Have you eaten jellyfish, jellyfish and worms? There are no organs in the body. They breathe on the epidermis and absorb the dissolved oxygen in the water. Earthworms and Ken Rana also absorb oxygen from the epidermis, emit carbon dioxide. The insect's abdomen has a large number of stomata, each stoma is a catheter, called “breathing tube”, and the human trachea is similar. Eel, it can use the mouth and throat skin directly breathe the air. Eel one straight in front of the shallow half of the body in the shallow water, that is, in order to swallow the air with the mouth on the water. Loach except gills breathing, but also can use the intestines to breathe. If you keep loach in cold water,