obsolete_Malpighian tubule true 2.38 adult Malpighian tubules http://purl.obolibrary.org/obo/UBERON_0001054 TGMA:0001038 FBbt:00005786 Any of a group of long blind vessels opening into the posterior part of the alimentary canal in most insects and some other arthropods and functioning primarily as excretory organs. true Use http://purl.obolibrary.org/obo/UBERON_0001054 label: malpighian tubule MAT:0000123 There are five Malpighian tubules that are attached to the alimentary canal posteriorly. The most important structure of the insect's excretory organ, which may comprise cystiform or labyrinthine highly versatile tubules having their outlet into the initial section of the rectum. tuba Malpighii James Malone adult Malpighian tubule BTO:0000810 malphigian tube TADS:0000163 FBbt:00005725 Malpighian tubules Epithelial tube with excretory and osmoregulatory roles connected, via a ureter, to the alimentary canal at the junction of the hindgut and midgut. There are two pairs of Malpighian tubules, the right pair lie at the anterior end of the abdomen, and the left pair at the posterior. Each tubule unites with its partner to form a common ureter which enters the alimentary canal at the junction of the hindgut and midgut (Wessing and Eichelberg, 1978).