calciferous gland
calciferous gland
[kal′sif·ə·rəs ‚gland] (invertebrate zoology)
One of a series of glands that secrete calcium carbonate into the esophagus of certain oligochaetes.
References in periodicals archive
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Whereas in the first case the majority of species present two gizzards (there are some genera with a single gizzard) in combination with kidney-shaped calciferous glands in the region of segments 14-19 (Csuzdi 2010), in the diplocardins there are two or three gizzards but no extramural calciferous glands occur.
Similar data, enlarged with added information on calciferous glands, were restated by Michaelsen (1918).
Calciferous glands (difficult to see in type material; not present in comparative material, having been removed by Michaelsen (1918: 331-332) for a study with its particular description): Half-globular in 9-10; closely connected to oesophagus; dorsally and ventrally separated.
Oesophageal gizzard 5, intestinal gizzard and calciferous glands absent.
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