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  2. Radula - Wikipedia

    en.wikipedia.org/wiki/Radula

    The radula (US: / ˈ r æ dʒ ʊ l ə /; pl.: radulae or radulas) [1] is an anatomical structure used by mollusks for feeding, sometimes compared to a tongue. [2] It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus .

  3. Odontophore - Wikipedia

    en.wikipedia.org/wiki/Odontophore

    Muscles that control the radula are shown in brown. The surface of the radula ribbon, with numerous teeth, is shown as a zig-zag line. The odontophore is part of the feeding mechanism in molluscs. It is the cartilage which underlies and supports the radula, a ribbon of teeth. [1] The radula is found in every class of molluscs except for the ...

  4. Digestive system of gastropods - Wikipedia

    en.wikipedia.org/wiki/Digestive_system_of_gastropods

    The buccal mass is the first part of the digestive system, and consists of the mouth and pharynx. The mouth includes a radula, and in most cases, also a pair of jaws. The pharynx can be very large, especially in carnivorous species. Many carnivorous species have developed a proboscis, containing the oral cavity, radula, and part of the ...

  5. Solenogastres - Wikipedia

    en.wikipedia.org/wiki/Solenogastres

    80% of solenogaster species have a radula, while in others it is secondarily lost. The radula may bear one or more teeth per row; where there is more than one tooth, there is no central radular tooth. [3] The radula grows by dividing existing teeth in two, or by adding a new tooth at the centre of the radular row. [3]

  6. Tusk shell - Wikipedia

    en.wikipedia.org/wiki/Tusk_shell

    The massive radula of the scaphopods is the largest such organ relative to body size of any mollusc (among whom, except for the bivalves, the presence of which is a defining characteristic). The remainder of the digestive system consists of a digestive diverticulum , esophagus , stomach , and intestine .

  7. Subradular organ - Wikipedia

    en.wikipedia.org/wiki/Subradular_organ

    The subradular organ is a sensory organ below the grinding mouthparts of some molluscs, specifically the chitons. [1] This organ is involved in chemoreception - that is, in judging the nature of food or the substratum. In this sense, it can be considered a 'smell' or 'taste' organ; food is sensed before each stroke of the radula. [1]

  8. Hyaline shield - Wikipedia

    en.wikipedia.org/wiki/Hyaline_shield

    The hyaline shield (hy.sh.) attached to an Octopus radula.Scale bar: 0.5 mm. The hyaline shield is a part of the radula in many kinds of molluscs.It serves as an attachment point for the muscles that retract the radula, and is thus located on the upper surface of the radula, arching backwards into the mouth.

  9. Patella vulgata - Wikipedia

    en.wikipedia.org/wiki/Patella_vulgata

    The radula in this species is longer than the shell itself. It contains 1,920 teeth in 160 rows of 12 teeth each. Patella vulgata is found attached to firm substrates from the high shore to the edge of the sublittoral zone, although it predominates in areas of wave action. Its shell is conical, up to around 6 cm long, and lacks defined chirality.