Identification of central neurons innervating the heart of Lymnaea stagnalis,L. (Gastropoda)

Gubicza, András and S.-Rózsa, Katalin (1969) Identification of central neurons innervating the heart of Lymnaea stagnalis,L. (Gastropoda). A Magyar Tudományos Akadémia Tihanyi Biológiai Kutatóintézetének évkönyve, 36. pp. 3-10. ISSN 0365-3005

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Abstract

1. Axon-injured neurons in the central nervous system of Lymnaea stagnalis can be identified on the basis of granular RNA accumulation demonstrable in their cytoplasm. This granular RNA can be fairly distinguished from the homogeneous fine RNA granules present in normal animals. 2. Following intersection of the intestinal nerve specific RNA accumulation were found in the neurons of cerebral, parietal, abdominal and pedal ganglia. In all, 46 neurons emit direct fibres to the intestinal nerve. 3. Appearance of cytoplasmic concentration of RNA following intersection of the intestinal nerve is an evidence that in the regulation of heart activity the giant cells have the largest share in proportion to their total number. 4. In addition to the cerebral and abdominal gangba, parietal and pedal ganglia are also involved in the regulation of heart activity in Gastropods.

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