The Human Brain During the Third Trimester

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GW30 Horizontal


CR 260 mm


Y187-65


Level 8: Section 721


Middle
frontal
gyrus

Nu
cle
us

acc
um
ben
s

Nu
cle
us

acc
um
ben
s

Inferior
frontal
gyrus

Lat
era

l (^) ve
ntr
icle
Lat
era
l (^) ve
ntr
icle
La
ter
al
fis
sur
e
T
h
ala
m
u
s
T
h
ala
m
u
s
B
as
a
lg
a
ng
lia
B
as
a
lg
a
ng
lia
Clau
strum
Clau
strum
In
sul
arg
yrus
In
sul
arg
yrus Choroid
plexus
Choroid
plexus
Third Third ventricleventricle
TTeemmppoorraal lol lobbee
Occipital
lobe
Occipital
lobe
Corpus
callosum
(rostrum)
Corpus
callosum
(rostrum)
Calcarine
sulcus
Interhemispheric
fissure
Frontal
lobe
Frontal
lobe
Pr
eopticar
ea
Pr
eopticar
ea
Hypo-
thalamus
Hypo-
thalamus
Subc
allosa
l are
a
Subc
allosa
l are
a
Midbrai
n
tectu
m
Midbrai
n
tectu
m
Hippo-
campus
Hippo-
campus
Parahippo-
campal
gyrus
Parahippo-
campal
gyrus
Superior temporal gyrus
Middle temporal gyrus
Inferior temporal gyrus
Globus
pallidus
Globus
pallidus
Pu
tam
en
Pu
tam
en
Puta
men
Puta
men
In
te
rn
al
c
ap
su
le
In
te
rn
al
ca
ps
ul
e
Ve
ntr
al
co
mp
lex
Ve
ntr
al
co
mp
lex
Posterior
complex
Posterior
complex
Superior
colliculus
Superior
colliculus
Layer I
Cortical plate
White matter
11
22
33
44
55
66 77 88
99
1010
1111
1212
16
(^13131414)
1515
Primary visualPrimary visualcortexcortex
Su
bt
ha
lam
us
Su
bt
ha
lam
us
Subthalamic
nucleus
Subthalamic
nucleus
Pa rahippocampal neuroepithelium, subventricular
zone, and stratified transitional field
6
2 Fr ontal neuroepithelium and subventricular zone
8 Occipital stratified transitional field
9 Te mporal neuroepithelium and subventricular zone
3 Fr ontal stratified transitional field
1 Rostral migratory stream (source area)
7 Occipital neuroepithelium and subventricular zone
4 Callosal glioepithelium
5 Fo rnical glioepithelium
10 Te mporal stratified transitional field
14 Po sterior striatal neuroepithelium and subventricular zone
11 Alve ar glioepithelium
13 Lateral migratory stream (cortical)
12 Subgranular zone (dentate)
15
Accumbent neuroepithelium and subventricular zone
(infiltrated by the rostral migratory stream)
16 Subpial granular layer (cortical)
Remnants of the germinal matrix, migratory streams, and transitional fields
See detail of brain core
in Plates 137A and B.
PLATE 119

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