Volvent nematocyst, artwork

Volvent nematocyst, artwork

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Credit: FRANCIS LEROY, BIOCOSMOS/SCIENCE PHOTO LIBRARY

Caption: Volvent nematocyst Artwork of a nematocyst, or cnidocyst, before (left) and after (right) discharge. Nematocysts are usually venomous threads that are found in Cnidaria, which includes jellyfish, sea anemones and corals. A volvent nematocyst doesn't contain any venom. Instead it wraps around its prey (green), entrapping it. The thread (red) is fired from a capsule (black) within a nematocyte (khaki), or cnidocyte, a specialised organelle. Firing is initiated when a hair-like trigger, the cnidocil (at top right of structure) is activated by passing prey.

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Keywords: artwork, biological, biology, cnidaria, cnidarian, cnidocil, cnidocyst, cnidocyte, coelenterate, cut out, cut outs, cut-out, cut-outs, cutout, cutouts, defence, defense, discharge, fauna, illustration, lassoing, nature, nematocyte, organelle, predator, predatory, prey, thread, volvent nematocyst, zoological, zoology

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