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Radula |
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radula [′raj·ə·lə]
(invertebrate zoology) A filelike ribbon studded with horny or chitinous toothlike structures, found in the mouth of all classes of mollusks except Bivalvia. Radula an apparatus in mollusks, except bivalves, that rasps off and tears up food. The radula consists of a chitinous basal ribbon that lies on the surface of the tongue, the muscular out growth of the ventral wall of the pharynx. It is covered with cross rows of numerous, up to 75,000, chitinous teeth, the number, shape, and position of which serve as taxonomic criteria. The radula works like a dredge equipped with scoops. Its main function is to allow the mollusk to rasp off the food, which is then swallowed. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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No references found | I did my Biology at University College,--getting out the ovary of the earthworm and the radula of the snail, and all that. |
Radula |
RADSAMP RADSCAT RADSIM RADSL RADSL RADSL RADSL RADSS RADSTA Radstädter Tauern Radstock Radstockian RADSTORE RADT RADTAG Radtke Tile and Marble, Inc. RADTRAN RADTS Radtsig, Aleksandr Radtsig, Aleksandr Aleksandrovich Radtsig, Sergei Radtsig, Sergei Ivanovich RADTU Radu Radu Beligan Radu Boureanu Radu the Great Radula Radula Gajdaradulae radulae radular radular Raduliform Radun Radunitsa Radura Radurization Radurization Radurization Radus-Zenkovich, Viktor Radus-Zenkovich, Viktor Alekseevich Radushnoe Raduzhnyi RAdv Radványi Chair in International Security Studies Radvd Radviliškis Radviliskis Radvision RADVR RADVS RADW RADWASS Radwaste Radwaste Radwaste Radwaste Area | |||||||
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