coxal gland

coxal gland

      in certain arthropods, one of a pair of excretory organs consisting of an end sac where initial urine is collected, a tubule where secretion and reabsorption may take place, and an excretory pore at the base (coxa) of one of the legs. Variations among the species include highly convoluted tubule sections, doubling back of straight tubule sections, and expansion of the terminal end into a bladder. In many higher crustaceans the excretory glands are located in the head. They are called antennal glands or maxillary glands, depending on whether they open at the base of the antennae or at the maxillae. If the tubule adjacent to the excretory pore is green, the gland is called a green gland.

* * *


Universalium. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Coxal gland — The coxal gland is a gland found in some arthropods, for collecting and excreting urine. They are found in all arachnids (with the exception of some Acari), and in other chelicerates, such as horseshoe crabs.[1] The coxal gland is thought to be… …   Wikipedia

  • coxal gland — noun : one of certain paired glands with ducts opening in the coxal region of arthropods and in some forms (as spiders) functioning as excretory organs …   Useful english dictionary

  • coxal gland — (Order Amphipoda): Segmentally arranged series of small excretory structures, one pair in each somite (pereonite) of pereon as well as in first four abdominal somites [Stachowitsch, 1992] …   Crustacea glossary

  • excretion — excretion1 /ik skree sheuhn/, n. 1. the act of excreting. 2. the substance excreted, as urine or sweat, or certain plant products. [1595 1605; < LL excretion (s. of excretio) that which is sifted out. See EXCRETE, ION] excretion2 /ik skree… …   Universalium

  • arachnid — arachnidan /euh rak ni deuhn/, adj., n. /euh rak nid/, n. 1. any wingless, carnivorous arthropod of the class Arachnida, including spiders, scorpions, mites, ticks, and daddy longlegs, having a body divided into two parts, the cephalothorax and… …   Universalium

  • Lithobius — Taxobox name = Lithobius image caption = Lithobius forficatus regnum = Animalia phylum = Arthropoda subphylum = Myriapoda classis = Chilopoda ordo = Lithobiomorpha familia = Lithobiidae genus = Lithobius genus authority = Leach, 1814 Lithobius is …   Wikipedia

  • sternal taenidium — (ARTHROPODA: Chelicerata) In Opilioacariformes, a surface canal in the sternal region of the podosoma extending from the coxal gland orifice, between coxae I and II, to the subcapitular gutter …   Dictionary of invertebrate zoology

  • Insect morphology — Legend of body parts Tagmata : A Head, B Thorax, C Abdomen. 1. antenna 2. ocelli (lower) 3. ocelli (upper) 4. compound eye 5. brain (cerebral ganglia) 6. prothorax …   Wikipedia

  • Arachnid — Taxobox name = Arachnida image width = 250px image caption = Arachnida from Ernst Haeckel s Kunstformen der Natur , 1904 regnum = Animalia phylum = Arthropoda subphylum = Chelicerata classis = Arachnida classis authority = Cuvier, 1812… …   Wikipedia

  • coxa — ( ) [Holthuis, 1993]. Schematic drawing of a thoracic leg. [Holthuis, 1993] Article 1 of thoracic and abdominal appendages [Holdich and Jones, 1983]. First article of limb, usually short [Poore, 2004]. First or proximal article of leg or… …   Crustacea glossary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”