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The Malpighian tubule system is a type of excretory andosmoregulatory system found in some Atelocerata (Insects andMyriapoda), arachnids and tardigrades.

The system consists of branching tubules extending from thealimentary canal that absorbs solutes, water, and wastes from the surrounding hemolymph. The wastes then are released from the organism in the form of solid nitrogenous compounds. The system is named after Marcello Malpighi, a seventeenth century anatomist.

It is unclear as to whether the Malpighian tubules of arachnids and those of the Uniramia are homologous or the result of convergent evolution

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Lottie Von

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