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- Ink_sac abstract "An ink sac is an anatomical feature that is found in many cephalopod mollusks used to produce the defensive cephalopod ink. With the exception of nocturnal and very deep water cephalopods, all coeloids (squid, octopus and cuttlefish) which dwell in light conditions have an ink sac, which can be used to expel a cloud of dark ink in order to confuse predators.The ink sac is a muscular bag which originated as an extension of the hind gut; it is a modified hypobranchial gland. It lies beneath the gut and opens into the anus, into which its contents – almost pure melanin – can be squirted; its proximity to the base of the funnel means that the ink can be distributed by ejected water as the cephalopod uses its jet propulsion. The ejected cloud of melanin is bound by mucus particles, so it forms a lump approximately the size and shape of the cephalopod, fixing the predator's attention while the mollusc itself makes a hasty escape.A general level of provocation is necessary to trigger an octopus to release its ink, as it is biologically costly to produce. Some species can even use their ink to stun or numb their predators.".
- Ink_sac thumbnail Chtenopteryx_sicula2_-_from_Commons.jpg?width=300.
- Ink_sac wikiPageID "2957131".
- Ink_sac wikiPageLength "2148".
- Ink_sac wikiPageOutDegree "11".
- Ink_sac wikiPageRevisionID "632972999".
- Ink_sac wikiPageWikiLink Category:Cephalopod_zootomy.
- Ink_sac wikiPageWikiLink Cephalopod.
- Ink_sac wikiPageWikiLink Cephalopod_ink.
- Ink_sac wikiPageWikiLink File:Chtenopteryx_sicula2_-_from_Commons.jpg.
- Ink_sac wikiPageWikiLink Hypobranchial_gland.
- Ink_sac wikiPageWikiLink Melanin.
- Ink_sac wikiPageWikiLink Mollusca.
- Ink_sac wikiPageWikiLink Mollusk.
- Ink_sac wikiPageWikiLink Mucus.
- Ink_sac wikiPageWikiLink Octopus.
- Ink_sac wikiPageWikiLinkText "Ink sac".
- Ink_sac wikiPageWikiLinkText "ink sac".
- Ink_sac wikiPageWikiLinkText "ink tube".
- Ink_sac wikiPageWikiLinkText "squirting ink".
- Ink_sac hasPhotoCollection Ink_sac.
- Ink_sac wikiPageUsesTemplate Template:Cephalopod-stub.
- Ink_sac wikiPageUsesTemplate Template:Cephalopod_anatomy.
- Ink_sac wikiPageUsesTemplate Template:Citation_needed.
- Ink_sac wikiPageUsesTemplate Template:Reflist.
- Ink_sac subject Category:Cephalopod_zootomy.
- Ink_sac hypernym Feature.
- Ink_sac type Article.
- Ink_sac type Work.
- Ink_sac type Article.
- Ink_sac comment "An ink sac is an anatomical feature that is found in many cephalopod mollusks used to produce the defensive cephalopod ink. With the exception of nocturnal and very deep water cephalopods, all coeloids (squid, octopus and cuttlefish) which dwell in light conditions have an ink sac, which can be used to expel a cloud of dark ink in order to confuse predators.The ink sac is a muscular bag which originated as an extension of the hind gut; it is a modified hypobranchial gland.".
- Ink_sac label "Ink sac".
- Ink_sac sameAs Tintenbeutel.
- Ink_sac sameAs Poche_du_noir.
- Ink_sac sameAs 墨袋.
- Ink_sac sameAs Woreczek_czernidłowy.
- Ink_sac sameAs Glândula_de_tinta.
- Ink_sac sameAs m.08g27t.
- Ink_sac sameAs Чернильный_мешок.
- Ink_sac sameAs Чорнильний_мішок.
- Ink_sac sameAs Q1323560.
- Ink_sac sameAs Q1323560.
- Ink_sac wasDerivedFrom Ink_sac?oldid=632972999.
- Ink_sac depiction Chtenopteryx_sicula2_-_from_Commons.jpg.
- Ink_sac isPrimaryTopicOf Ink_sac.