The Human Brain During the Third Trimester

GW26 Horizontal

CR 235 mm

Y16-59

Level 5: Section 520

TTeemmppoorraal lol lobbee

Frontal

lobe

Frontal

lobe

Occipital

lobe

Occipital

lobe

Cortical

plate

Middle

frontal

gyrus

Inferior

frontal

gyrus

Internal capsule (anterior limb)

Cingulum

Stria terminalis

Claustrum

External capsule

Internal capsule (posterior limb)

La

ter

al

ven

tric

le

La

ter

al

ven

tric

le

Late

ral (^) v
entri
cle
Late
ral (^) v
entri
cle
Choroid
plexus
Choroid
plexus
Cerebral aqueduct
Posterior commissure
Lateral fissure Middle temporal gyrus
Superior temporal gyrus
Cingulate gyrusCingulate gyrus
White matter
11
22
66
77
55
33
44
Interhemispheric fissure
Interhemispheric fissure
IInnssuullaarr^ ggyyrruuss
99
1010
1111
1212
1313
17
1616
1515
1414
88
Ca
ud
ate
Ca
ud
ate
T
ha
la
m
us
T
ha
la
m
B us
asa
l g
an
glia
B
asa
l g
an
glia
In
ter
na
lc
ap
su
le
In
ter
na
lc
ap
su
PutamenPutamen le
SeptumSeptum
FFornixornix
Ve
nt
ra
l (^) c
om
pl
ex
Ve
nt
ra
l (^) c
om
pl
ex
Po
ste
rio
r
co
m
ple
x
Po
ste
rio
r
co
m
ple
x
R
et
ic
ul
ar
be
lt
R
et
ic
ul
ar
be
lt
Superior colliculus
Gl
ob
us
pa
llid
us
Gl
ob
us
pa
llid
us
Third ve ntricle
Corpus
callosum
(genu)
Corpus
callosum
(genu)
Central
complex
Central
complex
Periventricular
complex
Periventricular
complex
Bed nuc. of the
stria terminalis
Bed nuc. of the
stria terminalis
Parahip-
pocampal
gyrus
Parahip-
pocampal
gyrus
Hippo-
campus
Hippo-
campus
Midbrain
tectum
Midbrain
tectum
1 Fr ontal neuroepithelium and subventricular zone
Pa rahippocampal neuroepithelium, subventricular
(^5) zone, and stratified transitional field
2 Fr ontal stratified transitional field
4 Fo rnical glioepithelium
13 Po sterior striatal neuroepithelium and subventricular zone
14 Anterolateral striatal neuroepithelium and subventricular zone
15 Anteromedial striatal neuroepithelium and subventricular zone
16 Strionuclear glioepithelium
10 Alve ar glioepithelium
11 Subgranular zone (dentate)
12 Lateral migratory stream (cortical)
17 Subpial granular layer (cortical)
3 Callosal glioepithelium
6 Occipital neuroepithelium and subventricular zone
7 Occipital stratified transitional field
8 Te mporal neuroepithelium and subventricular zone
9 Te mporal stratified transitional field
Remnants of the germinal matrix, migratory streams, and transitional fields
Layer I
An
teri
or l
imb
An
teri
or l
imb
Po
st
er
io
r^ l
im
b
Po
st
er
io
r^ l
im
b
See detail of brain core
in Plates 232A and B.
PLATE 220