The Human Brain During the Third Trimester

(vip2019) #1

PLATE 73


GW37 Horizontal


CR 320 mm


Y301-62


Level 9: Section 851


10 mm


Remnants of the germinal matrix, migratory streams, and transitional fields


2 Fr ontal neuroepithelium and subventricular zone


1 Rostral migratory stream (source area)


3 Fr ontal stratified transitional field


7 Occipital stratified transitional field


4 Fo rnical glioepithelium


14


Accumbent neuroepithelium and subventricular zone
(infiltrated by the rostral migratory stream)

15 External germinal layer (cerebellum)


5


Pa rahippocampal neuroepithelium, subventricular
zone and stratified transitional field

6 Occipital neuroepithelium and subventricular zone


8 Te mporal neuroepithelium and subventricular zone


9 Te mporal stratified transitional field


10 Alve ar glioepithelium


11 Subgranular zone (dentate)


12 Lateral migratory stream (cortical)


13 Po sterior striatal neuroepithelium and subventricular zone


1313


Primary visual cortex

Third Third ventricleventricle

Lateral fissure
Orbital gyrus

Orbital gyrus?

Middle frontal gyrus

Inferior frontal gyrus

Frontal
lobe

Frontal
lobe
SSuubbccaalllloossaall aarreeaa

HYPO-
THALAMUS

HYPO-
THALAMUS

PREOPTIC AREA
Superior
colliculus

Superior
colliculus

TTe gmentumegmentum TTectuectumm

Nucleus
accumben

s

Nucleus
accumben

s

Ins
ula
r^ g
yru
s

Ins
ula
r^ g
yru
s

Para-
hippocampal
gyrus

Para -
hippocampal
gyrus

Lateral
ventricle

Lateral
ventricle

Superior temporal gyrus
Middle temporal gyrus

Interhemispheric fissure

Occipital
lobe

Occipital
lobe

T
H
A
LA
M
U
S

T
H
A
LA
M
U
S

FFornixornix

11


22


66


55
33

44


77


88
1010

1111


1212


1414


99


Layer I

Cortical plate

White matter

Temporal
lobe

Te mporal
HippocampusHippocampus lobe

MIDBRAIMIDBRAINN
CEREBELLUM
(Vermis)

CEREBELLUM
(Vermis)

SU

B-

TH

AL

A
M
U
S

SU

B-

TH

AL

A
M
U
S

SUB
STA

NT
IA

INN

OM
INA
TA
SUB
STA

NT
IA

INN

OM
INA
TA

15


Cerebral
aqueduct

Cere bral
aqueduct

See detail of brain core and


cerebellum in Plates 87A and B.

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