Nematocyst

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[ne-ma-tuh-sihst]
Specialized stinging cells located in the ectodermis of the tentacles of a polyp that aid in predation.

Related Articles:
  • Glossary: Operculum
    An anatomical structure of a nematocyst that looks like a flap and whose pressure holds everything in place inside of the capsule.
  • Glossary: Thread
    The rope-like part of a nematocyst that can stick to, penetrate, or wrap itself around prey items.
  • Glossary: Cnidocil
    A hair-like projection located externally on the operculum of a nematocyst that, when stimulated, triggers the operculum to open.
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