The Human Brain During the Third Trimester

GW29 Coronal

CR 260 mm

Y14-59

Level 11: Section 1021

Precentral gyrus

Postcentral gyrus

Supramarginal

gyrus

Cingulate

gyrus

Cingulum

Induseum

griseum

Basal

ganglia

Basal

ganglia

Pu

ta

m

en

Pu

ta

m

en

ExterExternal capsulnal capsulee

Transpontine corticofugal tract

Pontine gray

Middle cerebellar peduncle

Pontocerebellar fibers

(decussation)

Interpeduncular fossa

Interhemispheric fissure

Parietal

lobe

Parietal

lobe

Pa

ra

ce

n

tr

al

(^) lo
b
ul
e
Pa
ra
ce
n
tr
al
(^) lo
b
ul
e
Temporal
lobe
Te mporal
lobe
Central sulcus
ThalamusThalamus
In
su
la
r
gy
ru
s
In
su
la
r
gy
ru
s
FFornixornix
Optic
tract
Optic
tract
Lateral Lateral ventriclventriclee
CorCorpus callosupus callosumm
Caudate
(head)
Caudate
(head)
Stria
medullaris
Stria
medullaris
Internal
capsule
Internal
capsule
Stria
terminalis
Stria
terminalis
C
er
eb
ra
l (^) p
ed
un
cl
e
C
er
eb
ra
l (^) p
ed
un
cl
e
Su
bs
ta
nt
ia
(^) ni
gr
a
Su
bs
ta
nt
ia
(^) ni
gr
a
Red
nucleus
Red
nucleus
Oculomotor
nuclear complex
Oculomotor
nuclear complex
Zona
incerta
Zona
incerta
Lateral
geniculate
body
Lateral
geniculate
body
PPonsons
Interpe-
duncular
nucleus
Interpe-
duncular
nucleus
Midbrain
tegmentum
Midbrain
tegmentum
Dentate
gyrus
Dentate
gyrus
SSuubbiiccuulluumm
A
m
m
on
's
ho
rn
A
m
m
on
's
ho
rn
Medial
geniculate
body
Medial
geniculate
body
Third Third ventricleventricle
1 Pa racentral/parietal neuroepithelium and subventricular zone
2 Pa racentral/parietal stratified transitional field
4 Po sterior striatal neuroepithelium and subventricular zone
11 Lateral migratory stream (cortical)
12 Subpial granular layer (cortical)
10 Te mporal stratified transitional field
9 Te mporal neuroepithelium and subventricular zone
6 Alve ar glioepithelium
3 Callosal glioepithelium
Remnants of the germinal matrix, migratory streams, and transitional fields
Lateral vLateral ventricleentricle
Ventral
complex
Ve ntral
complex
Dorsal
complex
Dorsal
complex
Central
complex
Central
complex
33
11
22
44
44
55
66
88
99
77
1010
12
1111
Lateral
fissure
Layer I
Cortical plate
White matter
7 Subgranular zone (dentate)
Hippo-
campus
Hippo-
campus
See detail of brain core
in Plates 182A and B.
5 Strionuclear glioepithelium
Pa rahippocampal neuroepithelium, subventricular zone,
and stratified transitional field
8
Entorhinal cortex (in parahippocampal gyrus)
Superior
temporal gyrus
Middle
temporal gyrus
Inferior
temporal gyrus
Fusiform gyrus
Caudate
(tail)
Caudate
(tail)
PLATE 161