Vol 61, No 4 (2002)
Original article
Submitted: 2012-02-06
Published online: 2002-08-29
The neuronal structure of the medial geniculate body in the pig - Nissl and Golgi study
Krystyna Bogus-Nowakowska, Stanisław Szteyn, Anna Robak
Folia Morphol 2002;61(4):271-276.
Vol 61, No 4 (2002)
ORIGINAL ARTICLES
Submitted: 2012-02-06
Published online: 2002-08-29
Abstract
The studies were carried out on the brains of adult pigs. The preparations were
made by means of the Golgi technique as well as the Nissl and Klüver-Barrera
methods. Four types of neurons were described in the medial geniculate body
(MGB) of the pig: 1. Multipolar neurons (perikarya 30–45 µm) with rounded, oval
or quadrangular perikarya from which arise 4-7 dendritic trunks. The dendrites
divide dichotomically twice, may send out collaterals and give off ramifications.
The dendritic branches possess varicosities and knob-like spines. These neurons
predominate in MGB. 2. Pear-shaped neurons (20-35 µm) with one or two dendritic
trunks arising from one pole of the cell body. These dendrites have a tufted
appearance. 3. Triangular neurons (30-45 µm) possess three thick dendrites which
first bifurcate near the soma and then divide profusely into daughter branches.
4. Fusiform neurons (30-50 µm) have usually two dendritic trunks which arise
from the opposite poles of the cell body and divide dichotomically twice. The
fusiform neurons are the least numerous in MGB. Most MGB neurons have on the
secondary tertiary dendrites and on their ramifications have delicate varicose or
bead-like appendages and spine-like protrusions. In all types of neurons an axon
arises either from the soma or from the initial portion of the dendritic trunk.
Abstract
The studies were carried out on the brains of adult pigs. The preparations were
made by means of the Golgi technique as well as the Nissl and Klüver-Barrera
methods. Four types of neurons were described in the medial geniculate body
(MGB) of the pig: 1. Multipolar neurons (perikarya 30–45 µm) with rounded, oval
or quadrangular perikarya from which arise 4-7 dendritic trunks. The dendrites
divide dichotomically twice, may send out collaterals and give off ramifications.
The dendritic branches possess varicosities and knob-like spines. These neurons
predominate in MGB. 2. Pear-shaped neurons (20-35 µm) with one or two dendritic
trunks arising from one pole of the cell body. These dendrites have a tufted
appearance. 3. Triangular neurons (30-45 µm) possess three thick dendrites which
first bifurcate near the soma and then divide profusely into daughter branches.
4. Fusiform neurons (30-50 µm) have usually two dendritic trunks which arise
from the opposite poles of the cell body and divide dichotomically twice. The
fusiform neurons are the least numerous in MGB. Most MGB neurons have on the
secondary tertiary dendrites and on their ramifications have delicate varicose or
bead-like appendages and spine-like protrusions. In all types of neurons an axon
arises either from the soma or from the initial portion of the dendritic trunk.
Keywords
medial geniculate body; types of neurons; Golgi and Nissl techniques; pig
Title
The neuronal structure of the medial geniculate body in the pig - Nissl and Golgi study
Journal
Folia Morphologica
Issue
Vol 61, No 4 (2002)
Article type
Original article
Pages
271-276
Published online
2002-08-29
Page views
455
Article views/downloads
1389
Bibliographic record
Folia Morphol 2002;61(4):271-276.
Keywords
medial geniculate body
types of neurons
Golgi and Nissl techniques
pig
Authors
Krystyna Bogus-Nowakowska
Stanisław Szteyn
Anna Robak
About this article