The Human Brain During the Third Trimester

GW26 Horizontal

CR 235 mm

Y16-59

Level 6: Section 560

TTeemmppoorraal lol lobbee

Frontal

lobe

Frontal

lobe Occipital

lobe

Occipital

lobe

Cortical

plate

Middle

frontal

gyrus

Inferior

frontal

gyrus

Internal capsule (anterior limb)

Lateral

ventricle

Lateral

ventricle

Lateral

ventricle

Lateral

ventricl e

Anterior commissuAnterior commissurree

Stria terminalis

Claustrum

External capsule

Internal capsule (posterior limb)

Choroid

plexus

Choroid

plexus

Cerebral aqueduct

Lateral fissure

Superior temporal gyrus Middle temporal gyrus

Subcallo

sal area

Subcal

losal are

a

White matter

11

22

66

66

77

55

33

44

Interhemispheric fissure

Interhemispheric fissure

Insular^

gyrus

Insular^

gyrus

99

1010

1111

16

1212

(^14141515)
1313
88
Ca
ud
ate
Ca
ud
ate
Ba
sa
l^ g
an
gl
ia
Ba
sa
l^ g
an
gl
ia
In
ter
na
lc
ap
su
le
In
ter
na
lc
ap
su
Put le
Putaammeenn
SeptumSeptum
FFornixornix
Superior
colliculus
Superior
colliculus
Globus
pallidus
Globus
pallidus Third ventricle
Cor
pus
ca
llos
um
(ro
stru
m)
Cor
pus
ca
llos
um
(ro
stru
m)
Bed nuc. of the
stria terminalis
Bed nuc. of the
stria terminalis
Parahip-
pocampal
gyrus
Parahip-
pocampal
gyrus
Hippo-
campus
Hippo-
campus
TTectuectumm
MidbraiMidbrainn
T
ha
la
m
us
T
ha
la
m
us
Su
bt
ha
la
m
us
Su
bt
ha
la
m
us
C
er
eb
ra
lp
ed
un
cle
C
er
eb
ra
lp
ed
un
cle
Zona
incerta
Zona
incerta
Forel's
fields
Fo rel's
fields
Subthalamic nucleus
2 Fr ontal neuroepithelium and subventricular zone
1 Rostral migratory stream (source area)
Pa rahippocampal neuroepithelium, subventricular
zone, and stratified transitional field
5
3 Fr ontal stratified transitional field
13 Anterolateral striatal neuroepithelium and subventricular zone
14 Anteromedial striatal neuroepithelium and subventricular zone
12 Po sterior striatal neuroepithelium and subventricular zone
15 Strionuclear glioepithelium
9 Alve ar glioepithelium
10 Subgranular zone (dentate)
11 Lateral migratory stream (cortical)
16 Subpial granular layer (cortical)
4 Callosal glioepithelium
6 Occipital stratified transitional field
7 Te mporal neuroepithelium and subventricular zone
8 Te mporal stratified transitional field
Remnants of the germinal matrix, migratory streams, and transitional fields
Layer I
Ant
eri
or (^) l
imb
Ant
eri
or (^) l
imb
Po
st
er
io
r^
lim
b
Po
st
er
io
r^
lim
b
See detail of brain core
in Plates 233A and B.
PLATE 221