The Human Brain During the Third Trimester

CClalauustrstruumm

PutamenPutamen

PutamenPutamen

F

o

r

n

ix

F

o

r

n

ix

FFoorrnniixx

Ext

ern

al^ c

aps

ule

Ext

ern

al^ c

aps

ule

Exter

nal capsul

e

Exter

nal capsul

e

C

a

u

d

a

te

(h

ea

d

)

C

a

u

d

a

te

(h

ea

d

)

Caudate

(head)

Caudate

(head)

Caudate

(tail)

Caudate

(tail)

Corpus

callosum

(splenium)

Corpus

callosum

(splenium)

Lateral ventricle

Dentate gyrus

Ammon's horn

Subiculum

Stria medullaris

Medial habenular nucleus

Habenulo-interpeduncular tract

Lateral fissure

Interhemispheric fissure

Dorsal tenia tecta

Anteromedial

nucleus

Anteromedial

nucleus

Dorsomedial

nucleus

Dorsomedial

nucleus

V

en

tr

a

l

a

n

te

r

io

r

n

u

c

le

u

s

V

en

tr

a

l

a

n

te

r

io

r

n

u

c

le

u

s

V

en

tral

lateral

n

u

cleu

Ven s

tral

lateral

n

u

cleu

s

Clau

strum

Clau

strum

IInnssuulalarr ggyyrruuss

IInnssuulalarr^ ggyyrruuss

Choroid

plexus

Choroid

plexus

ANTERIOR

COMPLEX

ANTERIOR

COMPLEX

Stria

terminalis

Stria

terminalis

Stria

terminalis

Stria

terminalis

BBA SAL GANGLIASAL GANGLIAA

THALAMUSTHALAMUS

Ventral

posterolateral

nucleus

Ve ntral

posterolateral

nucleus

PulvinarPulvinar

Third ventricle

SEPTUMSEPTUM

DORSAL

COMPLEX

DORSAL

COMPLEX

POSTERIOR

COMPLEX

POSTERIOR

COMPLEX

R

E

T

I

C U L A R B E L T

R

E

T

I

C U L A R B E L T

R

E

T

I

C U L A R B E L T

R

E

T

I

C U L A R B E L T

C

E

N

T

R

A

L

CO

MP

LEX

C

E

N

T

R

A

L

CO

MP

LEX

Periventricular

nuclei

Periventricular

nuclei

Mammillothalamic

tract?

Mammillothalamic

tract?

Anteroventral

nucleus

Anteroventra l

nucleus

Lateral migratory stream

Lateral migratory streamLateral migratory stream

Lateral migratory streamLateral migratory stream??

Ventral

posteromedial

nucleus

Ve ntral

posteromedial

nucleus

Centromedian

nucleus

Centro median

nucleus

Lateral septal

nucleus

Lateral septal

nucleus

Medial

septal nucleus

Medial

septal nucleus

Anterior commissure

Bed nucleus of the stria terminalis

I

n

t

e

r

n

a

l

c

a

p

s

u

le

I

n

t

e

r

n

a

l

c

a

p

s

u

le

R

e

t

i

c

u

l

a

r

n

u

c

l

e

u

s

R

e

t

i

c

u

l

a

r

n

u

c

l

e

u

s

C

en

tr

a

ll

a

te

ra

ln

uc

leus

C

en

tr

a

ll

a

te

ra

ln

uc

leus

Cingulate gyrus

(retrosplenial area)

Fasciola cinereum

P

ER

IVE

NTRI

CULA

RCO

MP

LEX

P

ER

IVE

NTRI

CULA

RCO

MP

LEX

Globus pallidus

(external segment)

Globus pallidus

(external segment)

Globus pallidus

(external segment)

Globus pallidus

(external segment)

V E N T R A L C

OM

PLEX

V E N T R A L C

OM

PLEX

Para-

fascicular

nucleus

Para-

fascicular

nucleus

L

at

er

al

(^) v
en
tr
ic
le
Cortical plate
White matter
Corpus callosum
(rostrum)
Layer I
Posterior lim
b
Po
sterior lim
b
A
nterior lim
b
A
nterior lim
b
Callosal glioepithelium
Fo rnical glioepithelium
Po sterior striatal neuroepithelium
and subventricular zone
Striatal neuroepithelium
and subventricular zone
(infiltrated by the
rostral migratory stream)
Alve ar glioepithelium
Subgranular zone
Strionuclear
neuroepithelium and
subventricular zone
Septal glioepithelium/
ependyma
Subpial granular layer
Visual radiation
HIPPO-
CAMPUS
HIPPO-
CAMPUS
Stem cells of choroid plexus
Strionuclear
glioepithelium
Strionuclear
glioepithelium
Germinal and transitional structuGerminal and transitional structurres ines in italicsitalics
An
ter
ola
ter
al
An
ter
ola
ter
al
Anteromedia
l
Anteromedia
l
Diencephalic (thalamic) glioepithelium/ependyma
PLATE 134B