Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology 437hirudinin n. [L. hirudo, leech] (ANN: Hirudinoidea) An anticoagulantsecretion of leeches.hispid a. [L. hispidus, hairy, prickly] Covered with rough hairsor minute spines.hispidulous a. [L. dim. hispidus, hairy, prickly] Minutely hispid.histoblast n. [Gr. histos, tissue; blastos, bud] The imaginaldisc.histochemistry n. [Gr. histos, tissue; chemeia, transmutation]The microscopic study of the chemical characteristics of tissues.histogenesis n. [Gr. histos, tissue; genesis, beginning] 1. Theformation and development of tissues from the undifferentiatedcells of the germ layers of the embryo. 2. (ARTHRO:Insecta) In holometabolic forms, histogenesis follows afterhistolysis of larval organs during the quiescent late larval orpupal stadia. see histolysis. histogenesis a.histohematin, histohaematin see cytochromehistology n. [Gr. histos, tissue; logos, discourse] The microscopicstudy of the detailed structure of the organs and tissuesof organisms.histolysis n. [Gr. histos, tissue; lyein, to loosen] 1. Breakdownof cells and tissues. 2. (ARTHRO: Insecta) The breakdown oflarval tissues during the quiescent late larval or pupalstages in holometabolic forms.histones n. [Gr. histos, tissue; -one, ketone] The basic proteinsassociated with DNA; the major general structuralproteins of chromatin, however, they can also act as depressorsof template activity.histopathology n. [Gr. histos, tissue; pathos, suffering; logos,discourse] The study of abnormal microscopic changes inthe tissue structure of an organism.histozoic a. [Gr. histos, tissue; zoon, animal] Dwelling withinthe tissues of a host.histrichoglossate a. [Gr. hystrix, porcupine; glossa, tongue](MOLL: Gastropoda) Referring to the radula, consisting ofnumerous types or categories of teeth: a median central