The neuronal structure of the dorsal nucleus of the lateral geniculate body in the common shrew [Sorex araneus] and the bank vole [Clethrionomys glareolus] : Golgi and Nissl studies

• Autorzy: Najdzion J , Wasilewska B. , Szteyn S. , Robak A. , Bogus-Nowakowska K. , Rowniak M.
• Języki publikacji: EN

Abstrakty

EN

The topography and neuronal structure of the dorsal nucleus of the lateral geniculate body (GLd) of the common shrew and the bank vole are similar. The lateral geniculate body of both the species examined has a homogeneous structure and no observable cytoarchitectonic lamination. On the basis of the shape of the dendritic arbours as well as the pattern of dendritic arborisations the following two types of neurons were distinguished. Type I “bushy” neurons that have multipolar or round perikarya (common shrew perikarya 9–12 µm, bank vole perikarya 10–13 µm), with 4–6 short thick dendritic trunks that subdivide into many bush-like branches. The dendritic trunks are smooth, in contrast to the distal branches, which are covered with numerous spine-like protrusions of different lengths and forms. An axon emerges from the soma, sometimes very close to one of the primary dendrites. The type I neurons are typically projection cells that send their axons to the primary visual cortex. These neurons predominate in the GLd of both species. Type II neurons, which have an elongated soma with primary dendrites arising from opposite poles of the perikaryon (common shrew perikarya 8–10 µm, bank vole perikarya 9–11 µm). The dendritic arbours of these cells are less extensive and their dendrites have fewer spines than those of the type I neurons. Axons were seldom observed. The type II neurons are presumably interneurons and are definitely less numerous than the type I neurons.

Słowa kluczowe

EN

neuronal structure; dorsal nucleus; lateral geniculate body; neuron type; common shrew; Sorex araneus; bank vole; Clethrionomys glareolus; Golgi preparation; Nissl method

• Wydawca: -
• Czasopismo: Folia Morphologica
• Rocznik: 2006
• Tom: 65
• Numer: 4
• Strony: 352-358
• Opis fizyczny: p.352-358,fig.,ref.

Twórcy

autor

Najdzion J

• University of Warmia and Mazury in Olsztyn, Plac Lodzki 3, 10-727 Olsztyn, Poland

autor

Wasilewska B.

autor

Szteyn S.

autor

Robak A.

autor

Bogus-Nowakowska K.

autor

Rowniak M.

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