The Human Brain During the Third Trimester

Dorsolateral nucleus

White matter

Cortical plate

Layer I

BASAL

GANGLIA

BA SAL

GANGLIA

TTe mporal lobeemporal lobe

Putamen

Callosal glioepithelium

Subgranular zone

Lateral migratory stream

Pontine gray

Reticular tegmental nucleus

Stria terminalis

External capsule

Caudate (tail)

Middle cerebellar peduncle

Pontocerebellar fibers (decussation)

Transpontine corticofugal tract

Cave of the septum

Cave of th e FFornixornix septum

Third ventricle

Inter- peduncular nucleus

Habenulo- interHabenulo- interpeduncular tractpeduncular tract

Inter- peduncular fossa

Ventral tegmental area

Ve ntral tegmental area

Lateral ve ntricle

Choroid plexus

THALAMUSTHALAMUS

Ce rebral peduncle

Ce re bral peduncle

Caudate (tail)

SubiculuSubiculumm

Pr esubiculu

m

P

resubiculu

m

P

a ar ec n tr a l n u c le u s

P

a ar ec n tr a l n u c le u s

Dorsomedial nucleus

Ventral lateral nucleus

Ve ntral lateral nucleus

Ventral posteromedial nucleus

Ve ntral posteromedial nucleus

Ventral posterolateral nucleus

Ve ntral posterolateral nucleus

Dorsolateral nucleus

Medial geniculate body

Me dia lemni l scu s?

Medial longitudinal fasciculus

Parabrachial nucleus

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

S up ra g en ic u la te

n uc le u s

S up ra g en ic u la te

n uc le u s

Centro- median nucleus

Centro - median nucleus

Internal capsule (posterior limb)

Me yer's loop (visual radiation)

Stria terminalis

Optic tract

PONSPONS

Red nucleus

S

u

b

s ta

n

ti

a

n

ig

r a

S

u

b

s ta

n

ti

a

n

ig

r a

MIDBRAIN

TEGMENTUM

MIDBRAIN

TEGMENTUM

HIPPOCAMPUHIPPOCAMPUSS

Pars compacta

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

A

m m on 's hor n

A

m m on 's hor n

Dentate gyrus

Lateral geniculate body

FimbriaFimbria

CoCorpus callosurpus callosumm

PO ST ER IO R CO MP LE X

Pa

rsreticul at a Pa

rsreticul at a

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

H ab en ul ar

nu cle i

H ab en ul ar

nu cle i

P

a r a fa sc ic u la r n u cl e u s

P

a r a fa sc ic u la r n u cl e u s PE

R

IV

E N T R IC

U L A

R

C

O M

PL

E X

PE

R

IV

E N T R IC

U L A

R

C

O M

PL

E X

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

St ri a m ed u ll a ri s

Para- hippocampal gyrus

Para - hippocampal gyrus

Pa racentral/parietal stratified transitional field

Po sterior striatal neuroepithelium and subventricular zone

Pa rahippocampal stratified transitional field

Te mporal neuroepithelium and subventricular zone

Pa rahippocampal neuroepithelium and subventricular zone

Subpial granular layer

Fo ra me n of M on ro

Strionuclear glioepithelium

Germinal and transitional structuGerminal and transitional structurres ines in italicitalicss

Thalamic glioepithelium/ ependyma

FusifFusiform gyrusorm gyrus

Oculomotor complex (III)Oculomotor complex (III)

Fornical glioepithelium

Fo rnical glioepithelium

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

Alve ar glioepithelium

PLATE 182B

The Human Brain During the Third Trimester

BASAL

GANGLIA

BA SAL

GANGLIA

P

P

P

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

A

A

P

P

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

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