Which part of malpighian tubules extract water, salt and nitrogenous waste from the heamolymph? (K)
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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 tubulesextending 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.
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The system consists of branching tubulesextending 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.
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Malpighian tubules are unbranched long tubules forming the excretory system of cockroach. The proximal portion of each tubule is absorptive and distal portion is secretory. Each tubule of malpighian tubules is lined by glandular epithelium. Glandular cells are the part of malpighian tubules extract water, salt, Co2 and nitrogenous wastes from the haemolymph and release them into the lumen of theses tubules. The proximal part reabsorb water and essential nutrients.
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