The Human Brain During the Third Trimester

(vip2019) #1

K


See this area of cortex


in Plates 21 and 22


GW37 Coronal


CR 350 mm


Y217-65


Level 8: Section 761


See detail of brain core


in Plates 34A and B.


1 Fr ontal neuroepithelium and subventricular zone


2 Fr ontal stratified transitional field


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


8 Anteromedial striatal neuroepithelium and subventricular zone


7 Anterolateral striatal neuroepithelium and subventricular zone


10 Diencephalic (thalamic) glioepithelium/ependyma


11 Diencephalic (hypothalamic) glioepithelium/ependyma


9 Strionuclear glioepithelium


12 Subpial granular layer (cortical)


4 Callosal sling


5 Fo rnical glioepithelium


6 Lateral migratory stream (cortical)


3 Callosal glioepithelium


Temporal
lobe

Te mporal
lobe

Induseum griseum

Claustrum
(infiltrated by the
lateral migratory
stream)

CCaauuddaattee ((bbooddyy))

P
ut
am
en

P
ut
am
en

In
te
rn

al^

ca
ps

ul
e

In
te
rn

al^

ca
ps

ul
e

Lateral fissure

Arcuate
nucleus

Optic
tract

Superior frontal gyrus

Precentral gyrus

Postcentral
gyrus

Central sulcus

Superior temporal gyrus

Middle temporal gyrus

Inferior temporal gyrus

Frontal
lobe

Frontal
lobe

Interhemispheric
fissure

Inferior frontal gyrus?

Insular gyrusInsular gyrus

Lateral
ventricle

Lateral
ventricl e

Third
ventricl

e

FFornixornix

FFornixornix

Basolateral
complex

Basolateral
complex

Cortico-
medial
complex

Cortico-
medial
complex

Substantia
innominata

Substantia
innominata

AmygdalAmygdalaa


An

teri

or

com

ple

x
An

teri

or

com

ple

x

White
matter

Cortical plate

Layer I

33


1010


55


66


66


77
88

22


11


1111


12


Cingulate
gyrus

Cingulate
gyrus

CingulumCingulum

Basal
ganglia

Basal
ganglia

99


1010


Hypo-
thalamus

Hypo-
thalamus

ThalamusThalamus

Glo
bus
pa
llid
us

Glo
bus
pa
llid
us

Third ventricle
(infundibu lar recess)

44


Anterior
commissure

Anterior
commissure

CorCorpus callosupus callosumm

Re

tic

ul
ar

be

lt

Re

tic

ul
ar

be

lt

Stria
medullaris

Stria
medullaris

Damaged areas in section

Paracentral
lobule

Paracentral
lobu le

PLATE 8

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