Appendages

  • 161 antenna — n.; pl. nae [L. antenna, feeler] 1. Analogous, unsegmented structures in mollusks, polychaete worms and rotifers. 2. (ARTHROPODA) A movable sensory appendage of various arthropods; usually segmented and located on the head above the mouth parts;… …

    Dictionary of invertebrate zoology

  • 162 cirrus — n.; pl. cirri [L. cirrus, curl] 1. Any slender, usually flexible structure or appendage. 2. Has been used for hair on appendages of insects and male copulatory organs in various invertebrates. 3. (ANNELIDA: Polychaeta) Small, tentacle like… …

    Dictionary of invertebrate zoology

  • 163 second maxillae — 1. (ARTHROPODA: Chilopoda) The fourth pair of head appendages. 2. (ARTHROPODA: Crustacea) The fifth and last pair of head appendages. 3. (ARTHROPODA: Insecta) The third pair of gnathal appendages; united in the labium …

    Dictionary of invertebrate zoology

  • 164 amphibian — /am fib ee euhn/, n. 1. any cold blooded vertebrate of the class Amphibia, comprising frogs and toads, newts and salamanders, and caecilians, the larvae being typically aquatic, breathing by gills, and the adults being typically semiterrestrial,… …

    Universalium

  • 165 bacteria — bacterial, adj. bacterially, adv. /bak tear ee euh/, n.pl., sing. bacterium / tear ee euhm/. ubiquitous one celled organisms, spherical, spiral, or rod shaped and appearing singly or in chains, comprising the Schizomycota, a phylum of the kingdom …

    Universalium

  • 166 bristletail — /bris euhl tayl /, n. any of various wingless insects of the order Thysanura, having long, bristlelike, caudal appendages, comprising the firebrats, silverfish, and machilids. [1700 10; BRISTLE + TAIL1] * * * ▪ insect       any of approximately… …

    Universalium

  • 167 cetacean — cetaceous, adj. /si tay sheuhn/, adj. 1. belonging to the Cetacea, an order of aquatic, chiefly marine mammals, including the whales and dolphins. n. 2. a cetacean mammal. [1830 40; < NL Cetace(a) name of the order (see CET , ACEA) + AN] * * *… …

    Universalium

  • 168 fungus — fungic /fun jik/, adj. funguslike, adj. /fung geuhs/, n., pl. fungi /fun juy, fung guy/, funguses, adj. n. 1. any of a diverse group of eukaryotic single celled or multinucleate organisms that live by decomposing and absorbing the organic… …

    Universalium

  • 169 integument — /in teg yeuh meuhnt/, n. 1. a natural covering, as a skin, shell, or rind. 2. any covering, coating, enclosure, etc. [1605 15; < L integumentum a covering. See IN 2, TEGUMENT] Syn. 1. cortex, involucre, involucrum. * * * Covering of the body,… …

    Universalium

  • 170 orthopteran — /awr thop teuhr euhn/, adj. 1. orthopterous. n. 2. an orthopterous insect. [1895 1900; < NL Orthopter(a) (see ORTHOPTERON) + AN] * * * ▪ insect Introduction   broadly, any member of one of four insect orders. Orthopteran has come to be regarded… …

    Universalium

  • 171 worm — wormer, n. wormlike, wormish, adj. /werrm/, n. 1. Zool. any of numerous long, slender, soft bodied, legless, bilaterally symmetrical invertebrates, including the flatworms, roundworms, acanthocephalans, nemerteans, gordiaceans, and annelids. 2.… …

    Universalium

  • 172 Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… …

    Universalium

  • 173 Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …

    Universalium

  • 174 animal development — Introduction  the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …

    Universalium

  • 175 salmoniform — ▪ fish Introduction       any member of the order Salmoniformes, a diverse and complex group of fishes. The order consists of about 1,000 species in the freshwaters and in the oceans of the world. Included are the familiar trout, salmon, and pike …

    Universalium

  • 176 sunspider — ▪ arachnid also called  sun scorpion ,  wind scorpion,  or  camel spider   any of 900 species of the arthropod class Arachnida whose common name refers to their habitation of hot, dry regions as well as to the golden colour and daytime activity… …

    Universalium

  • 177 Anatomy — • The science of the form and structure of living beings Catholic Encyclopedia. Kevin Knight. 2006. Anatomy     Anatomy     † …

    Catholic encyclopedia

  • 178 Dysplasia — Abnormal in form. From the Greek dys (bad, disordered, abnormal) and plassein (to form). For example, retinal dysplasia is abnormal formation of the retina during embryonic development. * * * Abnormal tissue development. SEE ALSO: heteroplasia.… …

    Medical dictionary

  • 179 artery — (Order Decapoda): One of numerous blood vessels originating from aorta or directly from heart. According to position or body region/appendages supplied, one may distinguish, among others, antennal, antennular, hepatic, lateral cephalic,… …

    Crustacea glossary

  • 180 article — A segment of any limb, but usually applied to the antennula or antenna [Wilson, 1989]. Any of the segments of a limb or appendage. See: coxa, basis, ischium, merus, carpus, propodus, dactylus [Poore, 2004]. Any one of the subdivisions of an… …

    Crustacea glossary


We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.