The Human Brain During the Third Trimester

PLATE 76

10 mm

GW37 Horizontal

CR 320 mm

Y301-62

Level 12: Section 1051

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

1 Rostral migratory stream

7 Lateral migratory stream (cortical)

8 Amygdaloid glioepithelium/ependyma

2

Pa rahippocampal neuroepithelium, subventricular

zone and stratified transitional field

3 Te mporal neuroepithelium and subventricular zone

4 Te mporal stratified transitional field

5 Alve ar glioepithelium

6 Subgranular zone (dentate)

9 External germinal layer (cerebellum)

Inferior temporal gyrus

Third

ventricle

Third

ventricle

Lateral fissure

Orbital gyrus

Optic

chiasm

Olfactory peduncle

Frontal

lobe

Frontal

GGyyrruuss rreeccttuuss lobe

HYPO-

THALAMUS

HYPO-

THALAMUS

Para-

hippocampal

gyrus

Para -

hippocampal

gyrus

Superior temporal gyrus? Middle temporal gyrus

Interhemispheric fissure

Oc

cip

ita

l

lo

Occbe

ipi

ta

l

lo

be

11

22

66

55

33

44

77

88

Layer I

Cortical plate

White matter

Temporal

lobe

Te mporal

lobe

H

ip

p

oc

am

p

us

H

ip

p

oc

am

p

us

VVermisermisCEREBELLUMCEREBELLUM

HemispheHemispherree

A

M

Y

G

D

A

LA

A

M

Y

G

D

A

LA

9

FusifFusiform gyrusorm gyrus??

FFourth ourth ventricleventricle

PONSPONS Deep

nucleinucleiDeep

See detail of brain core and

cerebellum in Plates 90A and B.

Damaged areas in section