The Human Brain During the Third Trimester

M

ed

ia

l (^) l
em
ni
sc
u
s
Superior
cerebellar
peduncle
(decussation)
White matter
Cortical plate
Layer I
TTe mporal lobeemporal lobe
Putamen
Subgranular zone
Pontocerebellar fibers
(thin transverse bundles)
Pontine gray
Stria terminalis
Putamen
External capsule
Insular gyrus
Caudate (tail)
Middle cerebellar peduncle
Pontocerebellar fibers (decussation)
Transpontine corticofugal tract
(thick longitudinal bundles)
FFornixornix
Third
ventricle
(pineal
recess)
Lateral ve ntricle
Stratum oriens
Stratum pyramidale
Stratum radiatum
Stratum lacunosum moleculare
Dentate granular layer
Dentate molecular layer
Dentate hilus
Choroid
plexus
Choroid
plexus
THALAMUSTHALAMUS
C
e
r
e
b
r
a
l
p
ed
u
n
c
le
C
e
r
e
b
r
a
l
p
ed
u
n
c
le
C
e
r
e
b
r
a
l
p
ed
u
n
c
le
C
e
re
b
r
a
l
p
e
d
u
n
c
le
Caudate (tail)
SubiculuSubiculumm

P

a

ar

c

ne

tr

a

l

n

u

cl

eu

s

P

a

ar

c

ne

tr

a

l

n

u

cl

eu

s

Dorsomedial

nucleus

Dorsomedial

nucleus

Ventral

posteromedial

nucleus

Ve ntral

posteromedial

nucleus

Ventral

posterolateral

nucleus

Ve ntral

posterolateral

nucleus

Dorsolateral

nucleus

Dorsolateral

nucleus

Medial

geniculate

body

Medial

geniculate

body

M

ed

ia

l (^) l
em
ni
sc
u
s
Medial longitudinal
fasciculus
Medial longitudinal
fasciculus
R
a
p
h
e^
n
u
cl
ea
r^
co
m
p
le
x
R
a
p
h
e^
n
u
cl
ea
r^
co
m
p
le
x
Centro-
median
nucleus
Centro -
median
nucleus
Internal capsule (posterior limb)
Stria terminalis
Optic tract
PONSPONS
MIDBRAIN
TEGMENTUM
MIDBRAIN
TEGMENTUM H
IP
P
O
C
A
M
P
U
S
H
IP
P
O
C
A
M
P
U
S

C

E

N

T

R

A

L

C

O

M

P

L

E

X

C

E

N

T

R

A

L

C

O

M

P

L

E

X

Ento

rh

in

a

l

c

o

r

t

e

x

Ento

rh

in

a

l

c

o

r

t

e

x

Dentate gyrus

Lateral

geniculate

body

Lateral

geniculate

body

Fimbria

POSTER

IOR (^) COM
PLEX
POSTER
IOR (^) COM
PLEX
D
O
R
S
A
L
C
O
M
P
L
E
X
D
O
R
S
A
L
C
O
M
P
L
E
X

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

Para-

hippocampal

gyrus

Para -

hippocampal

gyrus

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

PulvinarPulvinar

Suprageniculate nucleuSuprageniculate nucleuss

Ammon's horn

P

re

te

c

tu

m

P

re

te

c

tu

m

Brachium of the

inferior colliculus

Brachium of the

inferior colliculus

CeCerre bral aqueducebral aqueductt

Posterior

commissure

Po sterior

commissure

Superior

cerebellar

peduncle

(decussation)

Raphe

nuclear

complex

Raphe

nuclear

complex

Central

gray

Central

gray

R

eti

cu

lar

tegmentalnuc

le

us

R

eti

cu

lar

tegmentalnuc

le

us

CA3CA3

CA1CA1

Reticular Reticular ffo rmationormation

Reticular

formation

Reticular

fo rmation

Reticular

formation

Reticular

fo rmation

Pa rahippocampal stratified transitional field

Pa rahippocampal neuroepithelium

and subventricular zone

Te mporal neuroepithelium,

subventricular zone, and

stratified transitional field

Alve ar glioepithelium

Pa racentral/parietal

stratified transitional field

Po sterior striatal

neuroepithelium and

subventricular zone

Po sterior striatal

neuroepithelium and

subventricular zone

Strionuclear glioepithelium

Subpial

granular

layer

V

E

N

T

R

A

L

C

O

M

P

L

E

X

V

E

N

T

R

A

L

C

O

M

P

L

E

X

Germinal and transitional

structures in italics

Germinal and transitional

structures in italics

Fornical

glioepithelium

Fo rnical

glioepithelium

P

resubiculu

m

P

resubiculu

m

FusifFusiform gyrusorm gyrus

Oculomotor complex (III)Oculomotor complex (III)

Thalamic

glioepithelium/

ependyma

Thalamic

glioepithelium/

ependyma

Mesencephalic

glioepithelium/

ependyma

Mesencephalic

glioepithelium/

ependyma

PLATE 183B