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Malpighian tubule


Malpighian tubule
(mal-pig-ee-un)
A unique excretory organ of insects that empties into the digestive tract, removes nitrogenous wastes from the blood, and functions in osmoregulation.
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Malpighian tubules The excretory organs of insects; a set of long tubules that open into the gut. PICTURE ...
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malpighian tubules (Marcello Malpighi, Italian anatomist, 1628-1694). Blind tubules opening into the hindgut of nearly all insects and some myriapods and arachnids, and functioning primarily as excretory organs.
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In insects, a system involving Malpighian tubules is utilized to excrete metabolic waste. Metabolic waste diffuses or is actively transported into the tubule, which transports the wastes to the intestines.
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The excretory system consists of Malpighian tubules for the removal of nitrogenous wastes and the hindgut for osmoregulation. At the end of the hindgut, insects are able to reabsorb water along with potassium and sodium ions.
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