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gastric mill

zoology

Learn about this topic in these articles:

anatomy of crustaceans

  • American lobster
    In crustacean: The digestive system

    …a chitinized structure called the gastric mill. This consists of a series of calcified plates, or ossicles, that are moved against each other by powerful muscles, making an efficient grinding apparatus. The junction between the mill and the midgut is guarded by a filter of setae, which prevent particles from…

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  • hermit crab
    In malacostracan: Digestion and nutrition

    …filtering setae known as the gastric mill. The mill is strongly and complexly developed in large decapods, which ingest food quickly and in coarse chunks. The filtering setae are prominent in malacostracans that ingest fine materials or masticate their food thoroughly with the mouthparts. The macerated and partly digested food…

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