الفهرس 
material and methodsOnly 14 pages are availabe for public view
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Abstract
SUMMARY AND CONCLUSION
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A.Summary
The amygdaloid complex has been considered as an
important structure, with multiple connections with both
cortical and subcortical regions . The corticomedial part
of the amygdala which is phylogenetically older is
closely associated with the olfactory pathway. While the
basolateral part which is phylogenetically younger is
related to various activities , such as flight , defence ,
feeding
functions
find out
both parts
and mating behaviour This difference in
between both parts of the amygdala pushed us to
any correlated structural differences between
Thirty adult albino rats were used in the present
study ,divided into three equal groups . The first group
was processed for Nissl and Hx. & E. stains . The second
group was used for the Golgi Cox technique. While the
third group was processed for the electronmicroscopic
study. The following results were found in this study.
Classification Of The Amygdaloid Complex
The present cytoarchitectonic study ,confirmed
the division of the amygdaloid complex into three groups
of
The
nuclei , anterior ; corticomedial , and basolateral .
anterior group was formed of , the nucleus of the
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lateral olfactory tract , the anterior amygdaloid area and
the intercalated cell masses . The corticomedial group was
formed of medial, cortical and central amygdaloid nuclei.
The basolateral group was composed of the basal and
lateral nuclei
According to the differences in the size of cells
further subdivision of some of the amygdaloid nuclei was
made . The cortical nucleus was subdivided into medial and
lateral parts .Also, the basal nucleus was subdivided into
medial and lateral parts The lateral nucleus was
subdivided into venteral intermediate and dorsal parts .
Description Of The Amygdaloid Nuclei
In the anterior part of the amygdaloid complex,
small medium and large-sized cells were found . They
were pyramidal and rounded in shape and most of them had
deeply-stained cytoplasm .
In the corticomedial part of the complex , most of
the cells were small and medium-sized.They were pyramidal,
and oval in shape wi th pale-stained cytoplasm
However large deeply-stained cells were also found in
the lateral part of the cortical nucleus .
In the basolateral group of the complex , most of
and oval in shape with deeply-stained cytoplasm
IPyramidal
,
. However
the cells were medium and large-sized .They were
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small , rounded pale-stained cells were found in the
dorsal part of the lateral nucleus .
Golgi Study
Two types of neurons were found in the amygdaloid
complex of the rat projective and Golgi type II
Projective neurons with long axons were found in all the
amygdaloid nuclei They varied in shape ( pyramidal
oval , spindle-shaped and multiangular) arrangement
and size but all of them had long axons that left the
amygdala to establish connections with other regions.
Some axons were found to have local arborizations . Golgi
type II interneurons with short axons , which arborize
locally after short distance from their origins , were
found in the basolateral nuclei as well as in the
cortical and central amygdaloid nuclei A special form of
these interneurons was the neurogliaform cells in which
it was difficult to differentiate their axons from their
dendrites . They were found in the basal nucleus .
Electronmicroscopic Study
’*” Cell Somata:
Large ,medium and samll-sized somata were found in
the neuropil of both central and basolateral amygdaloid
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nuclei The small-sized cells were more frequent in the
basolateral nuclei and they were classified into two
groups according to their plasma structure .
With the respect to the axosomatic contacts it
was found that the cells of the central nucleus had
moderate and large number of contacts . However • some
cells were completely surrounded by a glial capsule
preventing them from establishing any synaptic contacts .
This was the same in the basolateral nuclei except that
the cells possessing a glial capsule were not found.
# Dendrites
Three types of dendrites were found in the
neuropil of both central and basolateral nuclei
projective varicose and presynaptic dendrites. The
surface membrane of the projective dendrites was richlycovered
wi th terminal boutons forming axodendritic
synaptic contacts The distal part of these dendrites had
dendritic spines These spines were more frequent in the
neuropil of the basolateral nuclei The varicose
dendrites were found in both nuclei and they belonged to
the neurogliaform neurons . Only one type of presynaptic
dendrites was found in the neuropil of both central and
basolateral nuclei ( with pale cytoplasmic profile and had
falttened and spheroidal vesicles)
# Axon Terminals :
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Four types of terminal boutons were found in the
neuropil of the central nucleus. B I boutons which were
filled with rounded vesicles ,uniform in size; B II
boutons which contained fewer rounded vesicles • variable
in size BIll boutons which were filled with flattened
vesicles and B IV boutons which had samll and large
spheroidal and dense-core vesicles Three types of
boutons (B I , B III and B IV) only were detected in the
neuropil of the basolateral nuclei .
B.Conclusion
Finally we can coclude that ,the cells of both the
corticomedial and the basolateral parts of the amygdala
were small • medium and large-sized and were pyramidal and
oval in shape. With Nissl stain the corticomedial cells
had a pale cytoplasm, while the cells of the basolateral
part had a deeply-stained cytoplasm With the Golgi
technique both parts had projective as well as Gogli
type II cells . Golgi type II cells were more frequent in
the basolateral part . Neurogliaform cells were found in
the basal nucleus .
In the electronmicroscopic study, the axosomatic
contacts found in both parts were the same except
that the cells possessing glial capsules were not detected
in the basolateral part Three types of dendrites
(projective varicose and presynaptic ) were found in
both parts of the complex. however. dendritic spines
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were more seen in the basolateral part . Four types of
axon terminals (B I , B II , B III and B IV) were detected
in the neuropil of the corticomedial part. But the
neuropil of the basolateral part had only three types
( B I , B III and B IV )