The Human Brain During the Third Trimester

Anterolateral striatal neuroepithelium

and subventricular zone

Anteromedial striatal neuroepithelium

and subventricular zone

Median preoptic nucleus

G

lo

b

u

s^

pa

lli

d

us

(e

xt

er

na

l^ s

eg

m

en

t)

G

lo

b

us

p

a

lli

d

us

(e

xt

er

na

l^ s

eg

m

en

t)

G

lo

b

u

s^

p

al

li

d

u

s

(i

n

te

rn

a

l^ s

eg

m

en

t)

G

lo

b

u

s^

p

al

li

d

u

s

(i

n

te

rn

a

l^ s

eg

m

en

t)

F

or

ni

x

F

or

ni

x

Mammillo-

thalamic

tract

Mammillo-

thalamic

tract

Fimbria/fFimbria/fororninixx Dentate gyrusDentate gyrus

Diagonal band of BrDiagonal band of Broca (voca (vertical limb)ertical limb)

Median preoptic nucleus

Anterior commissu

re

Anterior commissu

re

Exter

nal capsul

e

Exter

nal capsul

e

Caudate (head)Caudate (head)

Caudate

(tail)

Caudate

(tail)

Cor

pus

call

(ro osum

stru

m)

Cor

pus

call

(ro osum

stru

m)

Para-

hippocampal

gyrus

Para-

hippocampal

gyrus

Rostral migratory stream (source area)

Subgranular zoneSubgranular zone

Callosal

glioepithelium

Callosal

glioepithelium

Interhemispheric fissure

Interhemispheric fissure

Lateral fissure

Parafascicular

nucleus

Parafascicular

nucleus

Ventral

postero-

lateral

nucleus

Ventral

postero-

lateral

nucleus

Ventral

lateral

nucleus

Ventral

lateral

nucleus

Ventral

posteromedial

nucleus

Ventral

posteromedial

nucleus

PulvinarPulvinar

Habenulo-interpeduncular tract

Posterior commissure

Stria

terminalis

Stria

terminalis

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

Cla

ustr

um

Cla

ustr

um

P

uta

m

en

P

uta

m

en

Insular gyrusInsular gyrus

Choroid

plexus

Choroid

plexus

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

VENTRAL

COMPLEX

VENTRAL

COMPLEX

C

en

tr

al

lateralnu

cl

eu

s

C

en

tr

al

lateralnu

cl

eu

s

PERIVENTRICULARCO

MP

LE

X

PERIVENTRICULARCO

MP

LE

X

Third ventricle Third ventricle

Ammon's horAmmon's hornn

SubiculuSubiculumm

Zona

incerta

Zona

incerta

Forel's

fields

Forel's

fields

BBASAL GANGLIASAL GANGLIAA

SUBTHALAMUSSUBTHALAMUS

THALAMUSTHALAMUS

P

R

E

T

E

C

T

U

M

P

R

E

T

E

C

T

U

M

Massa

intermedia

Massa

intermedia

CCiningguulalatete^ ggyyrruuss

C

E

N

T

R

AL

CO

MPLEX

C

E

N

T

R

AL

CO

MPLEX

SUPERIOR

COLLICULUS

SUPERIOR

COLLICULUS

CingulumCingulum

Lateral Lateral ventricleventricle

Lateral ventricle

P

o

st

er

io

r

l

im

b

P

o

st

er

io

r

l

im

b

A

nt

er

io

r (^) l
im
b
A
nt
er
io
r (^) l
im
b
In
ter
n
al ca
p
su
le
In
ter
n
a
l ca
p
su
le
Bed nucleus of the
stria terminalis
Bed nucleus of the
stria terminalis
Medial
forebrain
bundle
Medial
forebrai n
bundle
Me yer's loop (visual radiation)
Germinal and transitional structures in italics

DORSAL

HIPPOCAMPUS

Stem cells of

choroid plexus

Stem cells of

choroid plexus

Frontal neuroepithelium and

subventricular zone

Fr ontal neuroepithelium and

subventricular zone

Frontal stratified

transitional field

Fr ontal stratified

transitional field

Strionuclear

glioepithelium

Strionuclear

glioepithelium

Fornical

glioepithelium

Fo rnical

glioepithelium

GlioepitheliuGlioepitheliumm

Alve ar glioepithelium

Callosal

glioepithelium

Callosal

glioepithelium

Po sterior striatal neuroepithelium and subventricular zone

Te mporal neuroepithelium and subventricular zone

Te mporal stratified transitional field

Frontal

lobe

Frontal

lobe

White matter

Cortical plate

Layer I

Centromedian

nucleus

Centromedian

nucleus

CENTRAL

COMPLEX

CENTRAL

COMPLEX

Diencephalic (hypothalamic)

glioepithelium/ependyma

Diencephalic (hypothalamic)

glioepithelium/ependyma

Diencephalic (thalamic)

glioepithelium/ependyma

Diencephalic (thalamic)

glioepithelium/ependyma

PLATE 85B