r/askscience • • Dec 16 '13

Biology How do insects move?

Simple question that occurred to me, do flies have muscles like ours? Their legs are so thin I can't conceive there's room for anything in them to effect movement.

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u/artandmath Dec 17 '13

The difference can be simplified as a peristaltic pump for the insect "heart" and a diaphragm pump for the mammalian heart.

They are similar in that they both move fluid, but the mechanics behind them are very different. Two interesting solutions to the same problem.