What is the mechanism by which water moves along the channels toward the lizard's mouth?

Answer

The water is physically pulled along the grooves via wicking action

The water is not absorbed by the skin tissues like a sponge; rather, it is physically pulled along the grooves created by the scale structure, directing the flow toward the mouth or throat area.

What is the mechanism by which water moves along the channels toward the lizard's mouth?

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Fluid transport, lizard-style | Tomorrow Today - YouTube

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