The Human Brain During the Third Trimester

Olfactory peduncle

GW37 Coronal

CR 350 mm

Y217-

Level 4: Section 511

2 Fr ontal neuroepithelium and subventricular zone

Fr ontal neuroepithelium and subventricular zone

(intermingled with the source of the

rostral migratory stream)

4

3 Fr ontal stratified transitional field

Remnants of the germinal matrix, migratory streams, and transitional fields

1 Rostral migratory stream

8 Anterolateral striatal neuroepithelium and subventricular zone

Accumbent neuroepithelium and subventricular zone

(^9) (intermingled with the source of the rostral migratory stream)
10 Subpial granular layer (cortical)
6 Callosal sling
7 Fo rnical glioepithelium
5 Callosal glioepithelium
Induseum griseum
Olfactory sulcus
Claustrum
C
au
da
te
(
he
ad
)
C
au
da
te
(
he
ad
)
Pu
ta
m
en
Pu
ta
m
en
In
te
rn
al
ca
ps
ul
e
In
te
rn
al
ca
ps
ul
e
Lateral fissure
Lateral fissure
Gyrus rectus
Superior frontal gyrus
Middle frontal gyrus
Frontal
lobe
Frontal
lobe
Interhemispheric
fissure
Inferior frontal gyrus
Insular gyrus
Damaged areas in section
Lateral
ventricl e
Fornix
(in septum
pellucidum)
Su
bc
al
lo
sa
l (^) a
re
a
Su
bc
al
lo
sa
l (^) a
re
a
Orbital gyri
White matter
Cortical plate
Layer I
33
33
44
10
55
6
7
8
22
1

C

in

gu

la

te

gy

ru

s

C

in

gu

la

te

gy

ru

s

CingulumCingulum

Corpuscallosu

m

Corpuscallosu

m

Basal

ganglia

Basal

ganglia Nu

cle

us

ac

cu

mb

en

s

Nu

cle

us

ac

cu

mb

en

(^99) s
PLATE 4