The Human Brain During the Third Trimester

PLATE 71

1414

1515

1313

GW37 Horizontal

CR 320 mm

Y301-62

Level 7: Section 761

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 Callosal glioepithelium

15 Strionuclear glioepithelium

12 Po sterior striatal neuroepithelium and subventricular zone

5 Fo rnical glioepithelium

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)

Third vThird ventricleentricle Primary visual cortex

Lateral fissure

Middle frontal gyrus

Inferior frontal gyrus

Frontal

lobe

Frontal

lobe

Superior frontal gyrus Subca

llosal

area

Subcallo

ar sal

ea

Bed nuc. of stria

terminalis

Bed nuc. of stria

terminalis Pretectum

Insular gyrusInsular gyrus

Cingulate gyrus

(retrosplenial area)

Lateral

ventricle

Lateral

ventricle

Lateral

ventricle

Lateral

ventricl e

B

as

al

g

an

gl

ia

B

as

al

g

an

gl

ia

Superior temporal gyrus

Middle temporal gyrus

Calcarine

sulcus

Calcarine

sulcus

Interhemispheric fissure

Occipital

lobe

Occipital

lobe

TTHHAALLAAMMUUSS

FFornixornix

Corpus

callosum

(rostrum)

Corpus

callosum

(rostrum)

11

22

66

55

33

44

44

77

88

1010

1111

1212

99

Layer I

Cortical plate

White matter

Temporal

lobe

Te mporal

lobe

HippocampusHippocampus

SEPTUM

See detail of brain core

in Plates 85A and B.

13 Anterolateral striatal neuroepithelium and subventricular zone

14 Anteromedial striatal neuroepithelium and subventricular zone

Damaged areas in section