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siphuncle

siphuncle A long tube present in those cephalopods (Cephalopoda) that possess external shells. It runs internally, through all the chambers, and contains the siphuncular cord of body tissue, extending from the visceral mass through a perforation in each septum of the shell. The siphuncle releases gas into the unoccupied chambers of the shell, making the animal buoyant.

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"siphuncle." A Dictionary of Earth Sciences. . Encyclopedia.com. 18 Aug. 2017 <http://www.encyclopedia.com>.

"siphuncle." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 18, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/siphuncle

"siphuncle." A Dictionary of Earth Sciences. . Retrieved August 18, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/siphuncle

siphuncle

siphuncle A long tube present in those cephalopods (Cephalopoda) that possess external shells. It runs internally, through all the chambers, and contains the siphuncular cord of body tissue, extending from the visceral mass through a perforation (foramen) in each septum of the shell. The siphuncle releases gas into the empty chambers of the shell, making it buoyant.

Cite this article
Pick a style below, and copy the text for your bibliography.

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"siphuncle." A Dictionary of Zoology. . Encyclopedia.com. 18 Aug. 2017 <http://www.encyclopedia.com>.

"siphuncle." A Dictionary of Zoology. . Encyclopedia.com. (August 18, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/siphuncle-0

"siphuncle." A Dictionary of Zoology. . Retrieved August 18, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/siphuncle-0