The Human Brain During the Third Trimester

1

Pa rietal neuroepithelium, subventricular zone,

and stratified transitional field

2

Occipital neuroepithelium, subventricular zone,

and stratified transitional field

4 Alve ar glioepithelium

5 Subgranular zone (dentate)

3

Pa rahippocampal neuroepithelium, subventricular

zone, and stratified transitional field

6 Lateral migratory stream (cortical)

9 Strionuclear glioepithelium

10 External germinal layer (cerebellum)

7 Amygdaloid glioepithelium/ependyma

8

Po sterior striatal neuroepithelium and

subventricular zone

11 Subpial granular layer (cortical)

Stria

terminalis

Stria

terminalis

Fim

bria

Fim

bria

Parahippocampal^ gyr

us

Parahippocampal^ gyr

us

Central

nucleus

Central

nucleus

Primary olfactory cortex (piriform)

AM

YG

DA

LA

AM

YG

DA

LA

Entorhinal cortexEntorhinal cortex

Dentate

gyrus

Dentate

gyrus

Dentate

gyrus

Dentate

gyrus

Ammon's horAmmon's hornn

Ammon's horAmmon's hornn

Bas

olate

ral

nuc

lear

com

ple

Ba x

sola

tera

l

nuc

lear

com

ple

x

CA1CA1

CA1CA1

CA1CA1

CA3CA3

CA3CA3

Superior

temporal

gyrus?

Superior

temporal

gyrus?

Inferior frInferior frontal gyruontal gyruss

PutamenPutamen

Claustru

m

Claustru

m

BBA SAL GANGLIASAL GANGLIAA

I

n

s

u

l a

r gy r us

I

n

s

u

l a

r gy r us

Uncinate

fasciculus

Uncinate

fasciculus

E

x

t

e

rn

al c

apsule

E

x

t

e

rn

al c

apsule

L

a

t

e

ral fi

ss

ur

e

L

a

t

e

ral fi

ss

ur

e

Internal

capsule

Internal

capsule

Lateral Lateral ventricleventricle

Choroid

plexus

Choroid

plexus

Caudate nucleus (tail)Caudate nucleus (tail)

Caudate nucleus (tail)Caudate nucleus (tail)

Cru

s (^) I
, an
sifo
rm
lob
ule
(HV
IIA
)
Cru
s (^) I
, an
sifo
rm
(^) lob
ule
(HV
IIA
)
Crus II
ansiform lobule
(HVIIA)
Crus II
ansiform lobu le
(HVIIA)
CER
EB
EL
LUM
(^) HE
MI
SPH
ER
E
CER
EB
EL
LUM
(^) HE
MI
SPH
ER
E
Occipital
lobe
Occipital
lobe
LLiningguulala
Calcarine Calcarine ffissuissurree
CCuunneueuss
SupramarSupramarginal gyrusginal gyrus
Angular gyrusAngular gyrus
P
ar
ie
ta
l lo
b
e
P
ar
ie
ta
l lo
b
e
FrFrontal lobeontal lobe
Remnants of the germinal matrix, migratory streams, and transitional fields
11
22
22
33
(^444)
55
66
77
88
99
99
10
11
66
66
HIPPOCAMPUSHIPPOCAMPUS
PLATE 62B