ink sac


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ink sac

a sac that opens into the rectum of some CEPHALOPODS, that when stimulated releases dark brown fluid that acts as a ‘smoke screen’.
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In our current study, we tested only the ink sac secretion, as our ink collections were from dissected animals and we could not find substantial amounts of mucus in the funnel organ.
Squid today use a similar ink sac to shoot out black fluid that blinds predators.
Slit open the head and remove the guts, carefully avoiding puncturing the ink sac.
Inside cells around the organ--as well as in the skin, in the ink sac, and around the eyes--are reflective, iridescent structures that resemble stacks of coins.
Taking the quill-like inner skeleton, King had the pupils dip the end into the squid's ink sac and write their names on the diagrams they used as guides.
Find the silvery ink sac (it looks like a small silver bag) and cut it open, so the ink comes out.
An old pen with unresilient ink sac may make many scratches before
When you separate section from barrel, expect hardened chips of old ink sac to fall out.
The functional symbiotic organ is composed of several host tissues, including a core of branching epithelial crypts that houses the symbionts; a thick reflector that directs the bacterial luminescence ventrally; diverticula of the ink sac that dynamically control the intensity of
When threatened, the squid squirts a mixture of dark ink and mucus from its ink sac out through its funnel.
Positioned in the body of the pen so that it compressed a rubber ink sac contained inside, the lever caused ink to be drawn up sufficient for several hours' writing.
In the adult female squid, the AN gland is adjacent to the ink sac and digestive organs on the ventral side of the mantle cavity [ILLUSTRATION FOR FIGURE 1 OMITTED].