The glial cells and glia—neuron relations in the buccal ganglia of Planorbis corneus (L): cytological, qualitative and quantitative changes during growth and ageing
Abstract
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The glial tissue in
<jats:italic>Planorbis</jats:italic>
ganglia surrounds and ensheaths the neurons. The majority of the glial processes are interwoven around the neuronal perikarya and their major axon branches. Glial cell processes form a layer between the blood and nerve perikarya, but this does not significantly interfere with the movements of many small molecules in and out of the tissue. Such movements can occur paracellularly, through the extracellular spaces, since there are no occluding junctions between the cells.
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