The Human Brain During the Third Trimester

Dark areas
are artifacts
of mounting
medium
crystallization

GW37 Coronal

CR 350 mm

Y217-65

Level 10: Section 881

See detail of brain core

in Plates 36A and B.

Fr ontal/paracentral neuroepithelium and

subventricular zone

1

7 Te mporal neuroepithelium and subventricular zone

Pa rahippocampal neuroepithelium, subventricular

zone, and stratified transitional field

6

2 Fr ontal/paracentral stratified transitional field

8 Te mporal stratified transitional field

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

12 Po sterior striatal neuroepithelium and subventricular zone

11 Amygdaloid glioepithelium/ependyma

15 Diencephalic (hypothalamic) glioepithelium/ependyma

14 Diencephalic (thalamic) glioepithelium/ependyma

13 Strionuclear glioepithelium

16 Subpial granular layer

4 Callosal sling

5 Fo rnical glioepithelium

10 Lateral migratory stream (cortical)

9 Alve ar glioepithelium

3 Callosal glioepithelium

Temporal

lobe

Te mporal

lobe

Induseum griseum

Claustrum

P

ut

am

en

P

ut

am

en

Lateral fissure

Mam-

millary

body

Entorhinal

cortex

Optic

tract

Optic

tract

Superior frontal gyrus

Precentral gyrus

Postcentral

gyrus

Central sulcus

Superior temporal gyrus

Middle temporal gyrus

Inferior temporal gyrus

Parahippocampal gyrus

Frontal

lobe

Frontal

lobe

Interhemispheric

fissure

Insular gyrusInsular gyrus

Lateral

ventricle

Lateral

ventricl e

Lateral

ventricle

Lateral

ventricl e

Third

ventricle

Periventricular

complex

Periventricular

complex

FFornixornix

Baso

latera

l

comp

Basolalex

teral

comp

lex

Cortico-

medial

complex

Cortico-

medial

complex

SubthalamuSubthalamuss

Su

bth

ala

mi

c

nuc

leu

s

Su

bth

ala

mi

c

nuc

leu

s

Ce

reb

ral

ped

un

cle

Ce

reb

ral

ped

un

cle

Hippo-

campus

Hippo-

campus Ammon' s

horn

Ammon' s

horn

Amy

gdal

a

Amy

gdal

a

Ve

nt

ra

l

co

m

ple

x

Ve

nt

ra

l

co

m

ple

x

White

matter

Cortical plate

Layer I

33

1010

55

66

77

88

22

11

1111

Cingulate

gyrus

Cingulate

gyrus

CingulumCingulum

Basal

ganglia

Basal

ganglia

99

Hypo-

thalamus

Hypo-

thalamus

ThalamusThalamus

Glo

bu

pal

lidu

Globus

s

pal

lidu

s

44

Anterior

commissure

Anterior

commissure

CorCorpus callosupus callosumm

Dorsal

complex

Dorsal

complex

Central

complex

Central

complex

Damaged areas in section

Central nucleuCentral nucleuss

1212

1414

1616

1515

1313

CCaauuddaattee ((ttaaiill))

P

aracentral

lo

b

ul

e

P

aracentral

lo

bu

le

PLATE 10