Radula
Radula
Radula (pronounced: /ˈrædʊlə/) is a unique anatomical structure found in mollusks, used primarily for feeding. The term "radula" is derived from the Latin word "radere," which means "to scrape."
Anatomy
The Radula is a ribbon-like structure covered with rows of microscopic teeth, known as radular teeth. The number, shape, and arrangement of these teeth can vary greatly among different species of mollusks. The radula is used to scrape food particles off surfaces and direct them into the animal's digestive tract.
Function
The primary function of the radula is feeding. However, in some species, it may also be used for other purposes, such as digging or defense. The radula works in a conveyor belt fashion, with new teeth being continuously produced at the posterior end as older teeth wear out at the anterior end.
Related Terms
- Mollusks: A large group of invertebrates that includes snails, slugs, clams, and octopuses. All mollusks possess a radula, with the exception of bivalves and aplacophorans.
- Radular teeth: The microscopic teeth found on the radula. Their number, shape, and arrangement can vary greatly among different species of mollusks.
- Gastropods: A class of mollusks that includes snails and slugs. Gastropods typically have a highly developed radula.
Etymology
The term "radula" comes from the Latin word "radere," which means "to scrape." This is a reference to the radula's primary function of scraping food particles off surfaces.
External links
- Medical encyclopedia article on Radula
- Wikipedia's article - Radula
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