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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 549highly coiled tubules that run side by side to enter anteriorlythe bulbus ejaculatorius or closely associated with theshort vasa deferentia.mesal, mesial a. [Gr. mesos, middle] At or near the midline <strong>of</strong>the body.mesal penellipse (ARTHRO: Insecta) In larvae, a series <strong>of</strong> crochetscovering at least the mesal half <strong>of</strong> the proleg, incompletelaterally. see penellipse.mesanapleural suture (ARTHRO: Insecta) In Diptera, a suturebetween the mesanepisternum and the meskatepisternum.mesanepisternum n. [Gr. mesos, middle; ana, up; epi, on;sternon, chest] (ARTHRO: Insecta) 1. In Diptera, the upperarea <strong>of</strong> the mesepisternum separated from themeskatepisternum by the mesanapleural suture; sometimesdivided into anterior and posterior by anepisternalcleft; the anepisternum. 2. In Odonata, the anepisternum.mesaxon n. [Gr. mesos, middle; axon, axel] (ARTHRO: Insecta)The spiral arrangement <strong>of</strong> a Schwann cell around an axon;suspensory fold.mesenchymatous cell see hemocytemesenchyme, mesenchyma n. [Gr. mesos, middle; enchyma,infusion] Embryonic connective tissue derived primarilyfrom mesoderm and consisting <strong>of</strong> a diffuse network<strong>of</strong> loosely connected or scattered cells not segregated intolayers or blocks.mesenteron n. [Gr. mesos, middle; enteron, gut] The midgutor midportion <strong>of</strong> the alimentary tract, endodermal in origin;ventriculus; midintestine.mesenteron rudiments (ARTHRO: Insecta) Groups <strong>of</strong> embryologicendodermal cells that regenerate the midgut(stomach) including the anterior and posterior; becomesthe epithelium <strong>of</strong> the adult mesenteron.mesentery n. [Gr. mesos, middle; enteron, gut] A supportingmembrane or one that forms a partition.mesepimeral scale or seta (ARTHRO: Insecta) Any scale orseta borne on the mesepimeron.mesepimeral suture see mesopleural suture

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