The Human Brain During the Third Trimester

11

1010

GW29 Coronal

CR 260 mm

Y14-59

Level 4: Section 701

Superior frontal gyrus

Cingulate

gyrus

Cingulum

Induseum

griseum

Basal gangliaBasal ganglia

SeptumSeptum

Middle frontal gyrus

Inferior frontal gyrus

PutamenPutamen

ClaustruClaustrumm

ExterExternal capsulnal capsulee

Ant

erior

com

miss

ure

Ant

erior

com

miss

ure

Globus

pallidus

Globus

pallidus

Medial

septal

nucleus

Medial

septal

nucleus

Superior temporal gyrus

Middle temporal gyrus

Lateral fissure

Inferior temporal gyrus

Parolfactory gyrus/uncus

Primary olfactory cortex (piriform)

Endopiriform nucleus

Ca

ud

ate

(^) (h
ea
d)
Ca
ud
ate
(^) (h
ea
d)
Inter
nal capsul
e
Inter
nal capsule
Interhemispheric fissure
Frontal
lobe
Frontal
lobe
Temporal
lobe
Te mporal
lobe
F
or
ni
x
F
or
ni
x
L
at
er
al
se
p
ta
ln
uc
le
us
L
at
er
al
se
p
ta
ln
uc
le
us
Preoptic
area
Preoptic
area
Olfactory tubeOlfactory tuberrc lecle
Islands of CallejaIslands of Calleja
N
uc
le
u
s
ac
cumb
ens
N
uc
le
u
s
ac
cumb
ens
In
su
la
r
gy
ru
s
In
su
la
r
gy
ru
s
Third ve ntricle
(preoptic recess)
1 Fr ontal neuroepithelium and subventricular zone
2 Fr ontal stratified transitional field
5 Fo rnical glioepithelium
4 Callosal sling
6 Rostral migratory stream
7 Accumbent neuroepithelium and subventricular zone
10 Lateral migratory stream (cortical)
8 Anteromedial striatal neuroepithelium and subventricular zone
9 Anterolateral striatal neuroepithelium and subventricular zone
11 Subpial granular layer (cortical)
3 Callosal glioepithelium
Remnants of the germinal matrix, migratory streams, and transitional fields
33
11
22
44
55
66
88
99
77
Co
rp
us
ca
llos
um
Co
rp
us
ca
llos
um
Layer I
Cortical plate
White matter
La
te
ral
ve
nt
ri
cl
e
See detail of brain core
in Plates 175A and B.
Fusiform gyrus
Damaged areas in section
PLATE 154