Cnidaria
| Medical Definition: |
A phylum of radially symmetrical invertebrates characterized by possession of stinging cells called nematocysts. It includes the classes ANTHOZOA; CUBOZOA; HYDROZOA, and SCYPHOZOA. Members carry CNIDARIAN VENOMS. |
| Guide Notes: |
poisoning: coord with CNIDARIAN VENOMS if pertinent |
Cnidaria Categories.
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Anthozoa - A class in the phylum CNIDARIA, comprised mostly of corals and anemones. All members occur only as polyps; the medusa stage is completely absent. |
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Cubozoa - The class of box jellyfish, in the phylum CNIDARIA, characterized by their cube shape, and considered the most venomous jellyfish. |
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Hydrozoa - A class in the phylum CNIDARIA which alternates between polyp and medusa forms during their life cycle. There are over 2700 species in five orders. |
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Scyphozoa - The class of true jellyfish, in the phylum CNIDARIA. They are mostly free-swimming marine organisms that go through five stages in their life cycle and exhibit two body forms: polyp and medusa. |
Cnidaria Medical Definitions and Terms
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