gastric mill

gastric mill
1. a gizzard in decapod crustaceans, as lobsters, crabs, and shrimps, having an arrangement of teeth and small bones for grinding food and bristles for filtering small particles.
2. gizzard (def. 2).

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Universalium. 2010.

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  • Gastric mill — is a part of the digestive tract of crustaceans. It is a muscular tube with sharp spines on the inside used to crack food items like hard shelled diatoms …   Wikipedia

  • gastric mill — noun thick walled muscular pouch below the crop in many birds and reptiles for grinding food • Syn: ↑gizzard, ↑ventriculus • Hypernyms: ↑pouch, ↑pocket * * * noun : a grinding apparatus consisting of several movable calcareous or chitinous pieces …   Useful english dictionary

  • gastric mill — A food grinding apparatus in the foregut of decapod crustaceans; in penaeid shrimps, consists of denticles (tooth like processes) and lateral ridges in wall of anterior chamber; in crayfishes, lobsters, and crabs, consists of one dorsal and two… …   Crustacea glossary

  • gastric ossicles — (ARTHROPODA: Crustacea) The teeth of the gastric mill …   Dictionary of invertebrate zoology

  • gastric — mill (ARTHROPODA: Crustacea) 1. Thickened and calcified parts in the cardiac stomach lining composed of moveable articulated ossicles used to break up food. 2. In Acrothoracica, chitinous triturating apparatus in the foregut; masticatory stomach …   Dictionary of invertebrate zoology

  • ossicles — Small, hard plates and projections of the internal gastric skeleton of decapod crustaceans; serve in part for attachment of muscles that move the foregut [Bliss, 1982]. (Order Decapoda): One in a complex of rigid, plate like structures associated …   Crustacea glossary

  • tooth — (Order Decapoda): Tooth like structure, either in gastric mill of cardiac stomach or referring to blunt, relatively broad projection on outer surface of carapace. In cardiac stomach, one may distinguish one median and two lateral teeth. On… …   Crustacea glossary

  • crustacean — /kru stay sheuhn/, n. 1. any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice. adj. 2. belonging or pertaining to the… …   Universalium

  • malacostracan — /mal euh kos treuh keuhn/, adj. 1. belonging or pertaining to the crustacean subclass Malacostraca, which includes the lobsters, shrimps, crabs, etc. n. 2. a malacostracan crustacean. [1825 35; < NL Malacostrac(a) order of crustacea ( < Gk, neut …   Universalium

  • Antarctic krill — Taxobox name = Antarctic krill image width = 200px regnum = Animalia phylum = Arthropoda subphylum = Crustacea classis = Malacostraca ordo = Euphausiacea familia = Euphausiidae genus = Euphausia species = E. superba binomial = Euphausia superba… …   Wikipedia

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