Malpighian tubules

Definition

A series of filamentous structures in the excretory system of insects and some arachnids that remove waste products from the hemolymph and regulate osmoregulatory balance.

Etymology

Named after Marcello Malpighi, an Italian biologist and physician, who made significant contributions to the understanding of the excretory system.

Example

The Malpighian tubules in grasshoppers serve to excrete nitrogenous wastes and help maintain internal water balance.

Synonyms

• Excretory tubules

Related Terms

• Kidneys
• Hemolymph
• Osmoregulation
• Excretion

Usage Notes

Malpighian tubules vary in number and structure among different insect and arachnid species but serve similar essential functions in waste removal and osmotic regulation.