A human’s tongue helps push food toward the teeth in order to chew it. However most fish simply swallow their

A human’s tongue helps push food toward the teeth in order to chew it. However most fish simply swallow their food. If this is the case, why do fish have a tongue?








any one know???

A human’s tongue helps push food toward the teeth in order to chew it. However most fish simply swallow their
It%26#039;s a good question. However, you%26#039;ll probably see the answer more clearly if you re-word it.





Our ancestors were fish-like vertebrates, so their type of immobile tongue %26quot;came first%26quot;. Our mammalian tongue has evolved from there, and adopted new functions, including handling food while chewing; but when you live in water, you don%26#039;t need to %26#039;swallow%26#039; like we do, you simply %26#039;suck %26#039; the food in. This means that the original function of the tongue must have been something else.





The tongue of fish-like vertebrates is much simpler and less mobile than ours (or that of other tetrapods including amphibians, reptiles, many birds, and other mammals). It is basically the ventral part of the second visceral arch (which is homologous with the arches that support the gills), and it is associated to muscles that can move it up and down, helping the water to flow into the mouth and over the gills for breathing.


While they%26#039;re swimming actively, the flow of respiratory water over the gills is not a problem, but when fish are immobile (resting or sleeping), or if they are simply slow-moving species, then the tongue-pumping is essential for them to breathe.


In addition, some fish have actual teeth on their tongue, and they use these to actually %26quot;chew%26quot; their food. This is one of those fish, the %26#039;pirarucú%26#039; from the Amazon basin:


http://www.aguasclara.com.br/fotos/Thiag...
Reply:Taste?
Reply:So they can go laa laaa laaaaaa
Reply:allow to drink water with out regurgitating it?
Reply:The human tongue also helps push food towards the throat. Same with fish. Plus the tongue aids in keeping food in the mouth so that it is swallowed in portions instead of all at once, thus helping to prevent blockage.
Reply:guides the food down the throat. Without a tongue, the mouth creates no pressure to force the food into the stomach.
Reply:You%26#039;re wrong. The purpose of a tongue is to push the bolus towards the back of the throat to be swallowed, not to push it towards the teeth. Thus, that is not the case. Fish probably have tongues for the same reasons we do; to taste and to swallow.
Reply:fishes have tongue?
Reply:What fish has a tongue?


Did you ever clean or remove a hook from a bullhead, carp, walleye, perch, etc.? Never saw a tongue on any of these.
Reply:Just because it isnt pushing food anywhere doesnt mean it doesnt have taste buds. If you cannot taste your food it becomes hard to recognize what is good or bad. You could ingest some poisonous snacks and not even know it until it is to late!



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