The Human Brain During the Third Trimester

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GW29 Coronal


CR 260 mm


Y14-59


Level 6: Section 781


Superior frontal gyrus

Cingulate
gyrus

Cingulum

Induseum
griseum

Basal gangliaBasal ganglia


SeptumSeptum


Middle frontal gyrus

Inferior
frontal gyrus

P
ut

am

en

P
ut

am

en

ClaustruClaustrumm

ExterExternal capsulnal capsulee

Globus
pallidus

Globus
Superior temporal gyrus pallidus

Middle temporal gyrus

Inferior temporal gyrus

Fusiform gyrus

Parolfactory/parahippocampal gyrus

Caudate (head)Caudate (head)

In
te
rn
al ca
psu
le

In
te
rn
al ca
psu
le

Interhemispheric fissure

Frontal
lobe

Frontal
lobe

Temporal
lobe

Te mporal
lobe

HypothalamusHypothalamus
Am
ygda
la

Am
ygda
la

In

su

la
r
gy

ru

s

In

su

la
r
gy

ru

s

Third
ve ntricle
Arcuate
nucleus?

FFornixornix

FFornixornix

Optic
tract

Optic
tract

Supra-
optic
nucleus

Supra-
optic
nucleus

Para-
ventricular
nucleus

Para -
ventricular
nucleus
Central
nucleus

Central
nucleus

Basolateral
complex

Basolateral
complex

Corticomedial
complex

Corticomedial
complex

Bed nucleus of
stria terminalis

Bed nucleus of
stria terminalis

Anterior
commissure

Anterior
commissure

Substantia
innominata

Substantia
innominata

Lateral Lateral ventricleventricle

Foramen
of Monro

Foramen
of Monro

1 Fr ontal neuroepithelium and subventricular zone


2 Fr ontal stratified transitional field


5 Fo rnical glioepithelium


4 Callosal sling


6 Strionuclear glioepithelium


8 Anterolateral striatal neuroepithelium and subventricular zone


9 Lateral migratory stream (cortical)
Pa rahippocampal stratified transitional field (intermingled

(^10) with the amygdaloid glioepithelium/ependyma)
7 Anteromedial striatal neuroepithelium and subventricular zone
3 Callosal glioepithelium
Remnants of the germinal matrix, migratory streams, and transitional fields
33
11
22
44
55
66
88
99
99
77
C
or
pu
sc
allosu
m
C
or
pu
sc
allosu
m
1010
Lateral fissure
Layer I
Cortical plate
White matter
Basal nucleus
of Meynert
Basal nucleus
of Meynert
See detail of brain core
in Plates 177A and B.
Damaged areas in section
PLATE 156

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