| If collar cells and spicules are defining characteristics of the Phylum Porifera, then nematocysts define cnidarians. |
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| The tentacles contain harpoon-like stinging capsules called nematocysts that the anemones employ to capture prey and ward off predators. |
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| However, actinians, like all coelenterates, capture and digest animal prey with their nematocysts. |
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| Casually touching many cnidarians will make it clear how they got their name when their nematocysts eject barbed threads tipped with poison. |
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| If pain persists, powder and shave the skin to remove any remaining nematocysts. |
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| They have nematocysts that serve to protect the hydroid and help to capture food. |
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| Only cnidarians manufacture microscopic intracellular stinging capsules, known as nematocysts or cnidae, which give the phylum its name. |
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| The nematocysts of cnidarians restrict potential predators to a limited array of specialists. |
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| Some colonies possess dactylozooids, tentacleless polyps heavily armed with nematocysts that seem primarily concerned with defense. |
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| As with other cnidarians, they bear powerful stinging structures called nematocysts, which are used for defense and for capturing food. |
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| Ctenophones are similar to Jellyfish, with one difference being that they do not have nematocysts. |
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| Pantyhose hinders the detection of the chemicals preventing the nematocysts from firing. |
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| The delicately coloured body has bizarre outgrowths, called cerata, which serve a defensive function, discharging nematocysts that the nudibranch has ingested from cnidarian prey. |
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| As a defence mechanism, they will release large quantities of nematocysts. |
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| The threads of some nematocysts ensnare small prey by wrapping about them. |
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| Sea anemones' poisonous nematocysts have small trigger hairs on the tentacles' surface. |
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| This environment also has coral and creatures that can inject venom into a wound by means of nematocysts along with some nasty bacteria. |
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| Presence of jellyfish or other jellies were identified by presence of tentacles, nematocysts, and whole or partial individuals. |
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| The shell collector was thinking, just then, of the persistence of nematocysts. |
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| Jellyfish sting using nematocysts, which are located in special cells called cnidocytes on the tentacles. |
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| Scraping the affected skin with a knife edge, safety razor, or credit card may remove remaining nematocysts. |
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| Ice or fresh water is not usually applied to stings, since they may cause nematocysts to continue to release toxin. |
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| Most neomenioids are predators on octocorals or hydroids, whose nematocysts are seen in their midguts. |
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| Contact with a tentacle can prompt millions of nematocysts to pierce the skin and inject venom, causing varying degrees of pain and swelling. |
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| The three goals of first aid for uncomplicated stings are to prevent injury to rescuers, deactivate the nematocysts, and remove tentacles attached to the patient. |
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| The pantyhose were formerly thought to work because of the length of the nematocysts, but it is now known to be related to the way the stinger cells work. |
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| Contact with a jellyfish tentacle can trigger millions of nematocysts to pierce the skin and inject venom, yet only some species' venom cause an adverse reaction in humans. |
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| Do you see a pattern of how the nematocysts are distributed? |
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| Nematocysts in the tentacles paralyze prey, such as small plankton. |
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