Zoology: General

A Dictionary of Earth Sciences A Dictionary of Zoology Further reading

siphuncle

A Dictionary of Earth Sciences | 1999 | | Copyright

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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AILSA ALLABY and MICHAEL ALLABY. "siphuncle." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "siphuncle." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-siphuncle.html

AILSA ALLABY and MICHAEL ALLABY. "siphuncle." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-siphuncle.html

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siphuncle

A Dictionary of Zoology | 1999 | | Copyright

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.

MLA
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MICHAEL ALLABY. "siphuncle." A Dictionary of Zoology. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "siphuncle." A Dictionary of Zoology. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O8-siphuncle.html

MICHAEL ALLABY. "siphuncle." A Dictionary of Zoology. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-siphuncle.html

Learn more about citation styles