dorsal valve

Online Dictionary of Invertebrate Zoology. . 2005.

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  • dorsal spine — 1. (G.T.). 2. (ARTHROPODA: Crustacea) In Ostracoda, sometimes prominent, solid or hollow, pointed projection on the dorsal valve margin …   Dictionary of invertebrate zoology

  • valve — Lateral part of divided carapace commonly joined to opposite part by hingement along dorsal mid line (e.g., Ostracoda, Conchostraca, Leptostraca) [Moore and McCormick, 1969]. Lateral part of divided carapace, commonly joined to opposite part by… …   Crustacea glossary

  • dorsal area — 1. (G.T.). 2. (ARTHROPODA: Crustacea) In Ostracoda, that part of the valve surface adjacent to the dorsal border, comprised of anterodorsal, mid dorsal and posterodorsal areas. 2. (MOLLUSCA) For chitins, see jugal area …   Dictionary of invertebrate zoology

  • dorsal — adj. [L. dorsum, back] 1. Pertaining to the upper surface or back of the body. 2. (ARTHROPODA: Crustacea) In Ostracods in normal position, the upper part comprising the area that contains hinge, eyes, antennules, antennae and stomach. 3.… …   Dictionary of invertebrate zoology

  • Valve (chiton) — Valves, when referring to Chitons, are eight dorsal, shell plates, which are frequently brightly coloured and/or sculptured. These valves contain unique microscopic structures called aesthetes which appear to have both sensory and secretory… …   Wikipedia

  • dorsal foramen — (BRACHIOPODA) A posterior perforation of the cardial plate that may or may not encroach on the beak of the brachial valve …   Dictionary of invertebrate zoology

  • brachial valve — (BRACHIOPODA) A valve containing any skeletal support for the lophophore, generally smaller than the pedicle valve; dorsal valve …   Dictionary of invertebrate zoology

  • Posterior urethral valve — Classification and external resources Vesiculæ seminales and ampullæ of ductus deferentes, seen from the front. Posterior urethral valves are at the dorsal aspect (back) of the prostatic urethra. DiseasesDB …   Wikipedia

  • médio-dorsal — médio dorsal, ale (mé di o dor sal, sa l ) adj. Qui est placé au milieu de la longueur du bord supérieur d une valve de coquille. ÉTYMOLOGIE    Lat. medius, moyen, et dorsal …   Dictionnaire de la Langue Française d'Émile Littré

  • Houston's valve — h(y)ü stənz n any of the usu. three but sometimes four or two permanent transverse semilunar folds of the rectum called also plica transversalis recti Houston John (1802 1845) British surgeon. Houston described the permanent transverse folds of… …   Medical dictionary

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