page_title: Malpighian tubule system
hierarchical_section_title: Malpighian tubule system
caption_attribution_description: English: Original diagram - C Turner
context_page_description: The Malpighian tubule system is a type of excretory and osmoregulatory system found in some insects, myriapods, arachnids, and tardigrades.
  The system consists of branching tubules extending from the alimentary 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 and calcium oxalate. 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.
context_section_description: The Malpighian tubule system is a type of excretory and osmoregulatory system found in some  insects, myriapods, arachnids, and tardigrades.
  The system consists of branching tubules extending from the alimentary 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 and calcium oxalate. 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.
caption: Stylised diagram of the last part of the insect's digestive tract showing malpighian tubule (Orthopteran type)
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