蛇的舌头狭长,舌尖分叉很深,可伸出很长。蛇舌头的前部可以向后缩进一个鞘状的舌基之中。蛇舌头的表面上有一层特异的组织,能感受到空气中很多气味的刺激。舌头不断迅速伸缩,其分叉的舌头不断摆动,是由于舌头上无味蕾,不能辨别酸、辣、苦、甜之味,舌头就成了嗅觉器官的好助手。舌头伸出口外,搜集空气中的微粒,这些微粒或粘附或溶解在舌尖湿润的表面上,舌头缩进口中,送入口腔上方的锄鼻器中产生了嗅觉,嗅 Snake's tongue is long and narrow, the tongue is very deep, can extend a long time. The front of the snake's tongue can be retracted into a sheath-like tongue base. Snake tongue on the surface of a layer of specific tissue, can feel the smell of the air a lot of stimulation. Continued rapid expansion and contraction of the tongue, the bifurcating tongue constantly swinging is due to the tasteless bud tongue, can not distinguish sour, spicy, bitter, sweet taste, the tongue has become a good assistant to the sense of smell of the organ. Out of the tongue out of the mouth to collect particles in the air, these particles or adhesion or dissolution in the tongue wet surface, tongue retraction mouth, into the mouth above the hoe nose produced smell, smell