Dictionary > Malpighian tubule

Malpighian tubule

Definition
noun, plural: Malpighian tubules
A tubule extending from the interior (alimentary canal) to the exterior of many arthropods, and is involved in osmoregulation by excreting water and wastes in the form of solid nitrogenous compounds
Supplement
Malpighian tubules are small slender tubes located posteriorly in the alimentary canals of arthropods, such as insects, myriapods, arachnids, and tardigrades. The tubules are extensions of the alimentary canal to the exterior. Each tubule is lined with a single layer of cells and with microvilli that propel the contents along the tubules. Most of them are highly convoluted and are bathed in hemolymph. These tubes are involved in osmoregulation; they absorb solutes, water, and wastes from the hemolymph and release wastes as solid nitrogenous compounds to the outside of the organism. Most of the Malpighian tubule systems have accessory musculature that help mix the contents of the tubules. In certain insects, the Malpighian tubules are modified. For instance, the Malpighian tubules of the larvae of the glowworm, Arachnocampa luminosa, are capable of emitting a blue-green light that attract prey.1
The name is derived from the anatomist Marcello Malpighi who is regarded as the Father of microscopical anatomy, histology, physiology and embryology.
See also:

Reference(s):

1 Green, L.B.S. (1979) The fine structure of the light organ of the New Zealand glow-wormArachnocampa luminosa (Diptera: Mycetophilidae).Tissue and Cell 11: 457–465.


You will also like...

Growth Patterns
Growth Patterns

This tutorial describes the sigmoid curve, annual plant growth, tree growth, human growth, and insect growth as the grow..

Still Water Community Plants
Still Water Community Plants

This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..

DNA carries genes coding for proteins
Genetic Information and Protein Synthesis

Genes are expressed through the process of protein synthesis. This elaborate tutorial provides an in-depth review of the..

Gene Regulation in Eukaryotes
Gene Regulation in Eukaryotes

Learn about the general structure of a eukaryotic gene, the transcription factors, and post-transcriptional regulation....

Psychiatry and mental disorders
Psychiatry & Mental Disorders

Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..

Physical growth
Physical Development in Humans

This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..

Related Articles...

No related articles found

See all Related Topics