The Human Brain During the Third Trimester

L

at

er

al

ve

n

tr

ic

le

ClaustruClaustrumm

CCllaauussttrruumm

PutamenPutamen

PutamenPutamen

FFoorrnniixx

FFoorrnniixx

Fo

rn

ix

Fo

rn

ix

F

o

r

n

ix

F

o

r

n

ix

Cave of the septum

Inte

rnal capsul

e

(anterior limb)

Inter

nal capsul

e

(anterior limb)

Extern

al capsu

le

Extern

al capsu

le

External cap

sule

External cap

sule

Inter

nal capsul

e

(posterior limb)

Inter

nal capsul

e

(posterior limb)

Caudate

(head)

Caudate

(head)

Caudate

(head)

Caudate

(head)

Caudate

(tail)

Caudate

(tail)

Cor

pus

callosu

m

Corpus(genu)

callosu

m

(genu)

Corpus

callosum

(splenium)

Corpus

callosum

(splenium)

Corpus

callosum

(splenium)

Corpus

callosum

(splenium)

Cingulate gyrus

(retrosplenial area)

Cingulate gyrus

(retro splenial area)

Lateral vLateral ventriclentriclee

C

in

g

u

lu

m

C

in

g

u

lu

m

C

in

g

u

la

te

(^) g
y
r
u
s
C
in
g
u
la
te
(^) g
y
r
u
s
Fo rnical
glioepithelium
Fornical
glioepithelium
Fo rnical
glioepithelium
Septal glioepithelium-
/ependyma
Induseum griseum
Stria medullaris
Lateral fissure
Lateral fissure
Interhemispheric fissure
Interhemispheric fissure
Anteroventral
nucleus
Anteroventra l
nucleus
Dorsomedial
nucleus
Dorsomedial
nucleus
D
orsolateral
nu
cleu
s
D
orsolateral
nu
cleu
s
V
e
n
tr
a
l
a
n
te
ri
o
r
n
u
c
le
u
s
V
e
n
tr
a
l
a
n
te
ri
o
r
n
u
c
le
u
s
Ve
nt
ra
l
lat
er
al
nu
cle
us
Ve
nt
ra
l
lat
er
al
nu
cle
us
CCllaauussttrruumm
IInnssuulalarr ggyyrruuss
Choroid
plexus
Chor oid
plexus
ANTERIOR
COMPLEX
ANTERIOR
COMPLEX
Stria
terminalis
Stria
terminalis
Stria
terminalis
Stria
terminalis
Stria
terminalis
Stria
terminalis
Stria
terminalis
Stria
terminalis
BBA SAL GANGLIASAL GANGLIAA
THALAMUSTHALAMUS
Lateral^ septal^ n
ucleus
Lateral^ septal^ n
ucleus
Cin
gul
um
Cin
gul
um
Cin
gul
um
Cin
gul
um
Ventral
posterolateral
nucleus
Ve ntral
posterolateral
nucleus
PulvinarPulvinar
Third ventricle
Foramen
of Monro
C
e
n
tr
a
l
la
te
ra
ln
uc
leu
s
C
e
n
tr
a
l
la
te
ra
ln
uc
leu
s
R
e
t
i
c
u
l
a
r
n
u
c
le
u
s
R
e
t
i
c
u
l
a
r
n
u
c
le
u
s
DORSAL
COMPLEX
DORSAL
D COMPLEX
OR
SA
L
CO
M
PL
EX
DO
RS
AL
(^) C
OM
PL
EX
POSTERIOR
COMPLEX

POSTERIOR

COMPLEX

V

E

N

T

R

A

L

C

O

M

P

LE

X

V

E

N

T

R

A

L

C

O

M

P

LE

X

R

E

T

IC

U

L

A

R

B

E

LT

R

E

T

IC

U

L

A

R

B

E

LT

PERIVENTRIC

UL

AR

CO

MP

LE

X

PERIVENTRIC

UL

AR

CO

MP

LE

X

C

E

N

TR

AL

CO

MP

LEX

C

E

N

TR

AL

CO

MP

LEX

Periventricular

nuclei

Periventricular

nuclei

Mammillo-

thalamic

tract?

Mammillo-

thalamic

tract?

In

te

rn

al

ca

p

s

u

le

In

te

rn

al

ca

p

s

u

le

Lateral migratory stream?

Lateral migratory

stream?

Lateral migratory

stream?

Lateral migratory streamLateral migratory stream??

Cortical plate

Layer I

White matterWhite matter

Germinal and transitional structures in italics

Pa rietal/temporal

neuroepithelium and

subventricular zone

Rostral migratory stream

(source area)

Rostral migratory stream

(source area)

Pa rietal/temporal

stratified transitional field

Subpial granular

layer

Subpial granular

layer

To rn and shifted area

in the section

Frontal neuroepithelium

and subventricular zone

Fr ontal neuroepithelium

and subventricular zone

FFr ontal stratified transitional fieldrontal stratified transitional field

Callosal

glioepithelium

Callosal

glioepithelium

Callosal

glioepithelium

Callosal

glioepithelium

Po sterior striatal neuroepithelium

and subventricular zone

Str

iat

al^

neu

roe

pit

he

liu

m

and

su

bve

ntr

icu

lar

zo

ne

Stem cells of Stem cells of choroid plexuschoroid plexus

Stem cells of Stem cells of choroid plexuschoroid plexus

Stem cells of choroid plexus

Strionuclear

glioepithelium

Strionuclear

glioepithelium

Strionuclear

glioepithelium

Strionuclear

glioepithelium

An

ter

ol

ate

ra

l

An

ter

ol

ate

ra

l

AnteromedialAnteromedial

Callosal slinCallosal slingg

Callosal slinCallosal slingg

PLATE 133B