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The neuronal structure of the substantia nigra in the guinea pig: Nissl and Golgi study
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Abstract
1. Bipolar neurons of two kinds: the neurons of the first kind have elongated, fusiform perikarya (25-40 µm), whereas the cells of the second kind have rounded and oval perikarya (15-22 µm). These neurons possess two dendritic trunks which arise from the opposite poles of the cell body and run for a relatively long distance. The bipolar neurons are the most numerous in the pars compacta of SN.
2. Triangular neurons with three primary dendrites arising conically from a perikaryon (20-35 µm). They are the most often observed type of neurons in the pars reticulata of SN.
3. Multipolar neurons with quadrangular or oval perikarya (22-35 µm) and 4-5 dendritic trunks which spread out in all directions.
4. Pear-shaped neurons (perikarya 15-25 µm), which have one or two primary dendritic trunks arising from one pole of the cell body. In all the types of neurons an axon originates either from the dendritic trunk or from the soma and is observed only in its initial segment.
Abstract
1. Bipolar neurons of two kinds: the neurons of the first kind have elongated, fusiform perikarya (25-40 µm), whereas the cells of the second kind have rounded and oval perikarya (15-22 µm). These neurons possess two dendritic trunks which arise from the opposite poles of the cell body and run for a relatively long distance. The bipolar neurons are the most numerous in the pars compacta of SN.
2. Triangular neurons with three primary dendrites arising conically from a perikaryon (20-35 µm). They are the most often observed type of neurons in the pars reticulata of SN.
3. Multipolar neurons with quadrangular or oval perikarya (22-35 µm) and 4-5 dendritic trunks which spread out in all directions.
4. Pear-shaped neurons (perikarya 15-25 µm), which have one or two primary dendritic trunks arising from one pole of the cell body. In all the types of neurons an axon originates either from the dendritic trunk or from the soma and is observed only in its initial segment.
Keywords
substantia nigra; types of neurons; Golgi and Nissl pictures
About this articleTitle
The neuronal structure of the substantia nigra in the guinea pig: Nissl and Golgi study
Journal
Issue
Article type
Original article
Pages
271-277
Published online
2000-08-02
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532
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1519
Bibliographic record
Folia Morphol 2000;59(4):271-277.
Keywords
substantia nigra
types of neurons
Golgi and Nissl pictures
Authors
Krystyna Bogus-Nowakowska
Stanisław Szteyn
Anna Robak
