Histology and Histochemistry of Mantle of Lymnaea Luteola (Lamarck 1799) Mollusca Gastropoda
نویسنده
چکیده
The mantle is an important molluscan organ. It serves as a respiratory organ in most of the pulmonates; its walls have a dense vascular network. It is an outer jacket of the visceral mass and harbors the pulmonary chamber on its right side. Mantle is the specialized organ of the gastropods for it not only bears the glands that secrete the shell but also acts as buffer between the hard calcareous shell and the animal itself, spreading like a cushion through the entire inner surface of the body whorl. In Lymnaea luteola two types of gland cells are noticed in the mantle;epithelia and sub – epithelial. The epithelial mucous glands secrete metachromatic, alcianophilic sulphated mucopolysaccharides. The sub – epithelial mucous glands are classified into two categories, according to their histochemical reactions. Some of them secrete non – metachromatic, alcianophilic sulphated mucopolysaccharides and others secrete mucosubstances which are carboxylated.
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