rectal gills
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rectal tracheal gills — (ARTHROPODA: Insecta) In some nymphs of Odonata, lamellate structures in the rectum supplied with tracheae and tracheoles … Dictionary of invertebrate zoology
insect — insectival /in sek tuy veuhl/, adj. /in sekt/, n. 1. any animal of the class Insecta, comprising small, air breathing arthropods having the body divided into three parts (head, thorax, and abdomen), and having three pairs of legs and usually two… … Universalium
dragonfly — noun Date: 1626 any of a suborder (Anisoptera) of odonate insects that are larger and stouter than damselflies, hold the wings horizontal in repose, and have rectal gills during the naiad stage; broadly odonate … New Collegiate Dictionary
brachial basket — (ARTHROPODA: Insecta) In Odonata, a barrel like chamber in the anterior two thirds of the rectum that functions by the intake and expulsion of water; rectal gills … Dictionary of invertebrate zoology
branchial basket — (ARTHROPODA: Insecta) In Odonata, a chamber of the rectum that contains the rectal gills … Dictionary of invertebrate zoology
Anisoptera — noun dragonflies • Syn: ↑suborder Anisoptera • Hypernyms: ↑animal order • Member Holonyms: ↑Odonata, ↑order Odonata * * * ˌaˌnīˈsäptərə noun plural … Useful english dictionary
digestive system, human — Introduction the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract (alimentary canal), or the series of structures and organs through which food and liquids pass… … Universalium
respiration — respirational, adj. /res peuh ray sheuhn/, n. 1. the act of respiring; inhalation and exhalation of air; breathing. 2. Biol. a. the sum total of the physical and chemical processes in an organism by which oxygen is conveyed to tissues and cells,… … Universalium
Gill — A gill is an anatomical structure found in many aquatic organisms. It is a respiration organ whose function is the extraction of oxygen from water and the excretion of carbon dioxide. The microscopic structure of a gill is such that it presents a … Wikipedia
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
