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Operculum in Biological Definition

Marine biology

...since they exist in a watery environment it means that very different biological functions have evolved . Fish anatomy includes two chamber heart , operculum , secretory cells that produce mucous , swim bladder , scales , fins , gills , lips and eyes . Fish breathe under water by extracting oxyge...
Operculum in Biological Dictionary

Operculum

The operculum , meaning little lid, is a corneous or calcareous structure which exists in some groups of marine, freshwater, but not in terrestrial snails or gastropods. It is present in most but not all gastropods that have... In biology, operculum has been used to describe several different...
Operculum in other areas

Operculum - Wikipedia, the free encyclopedia

In biology, operculum has been used to describe several different anatomical features, in animals, in humans and even in plants. The following list gives some of the uses of the term:

Operculum (gastropod) - Wikipedia, the free encyclopedia

The operculum, meaning little lid, is a corneous or calcareous structure which exists in many (but not all) groups of sea snails and freshwater snails, and also in a few groups of land snails. In other words, this anatomical...

operculum: Definition from Answers.com

operculum n. , pl. -la or -lums . A lid or flap covering an aperture, such as the gill cover in some fishes or the horny shell cover in snails or

operculum: Information from Answers.com

operculum a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is

operculum - Definition from the Merriam-Webster Online Dictionary

Definition of operculum from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Shell

The result is a concentric operculum with the oldest part in the center. The operculum is only enforced with a calcium layer in the genus Pila, the other ...
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