The Human Brain During the Third Trimester

Dark areas

are artifacts

of mounting

medium

crystalli-

zation

K

See this area of cortex in

Plates 23 and 24

GW37 Coronal

CR 350 mm

Y217-65

Level 13: Section 1081

See detail of brain core

in Plates 39A and B.

Induseum griseum

Temporal

lobe

Te mporal

lobe

Temporal

lobe

Te mporal

lobe

Induseum griseum

Caudate

(tail)

Caudate

(tail)

Lateral

fissure

Transpontine corticofugal tract

Reticular tegmental nucleus

Pontine gray

Middle cerebellar peduncle

Lateral

geniculate

body

Lateral

geniculate

body

Medial

geniculate

body

Medial

geniculate

body

Precentral gyrus

Postcentral gyrus

Central sulcus

Superior

temporal

gyrus

Middle

temporal

gyrus

Inferior temporal gyrus

Parahippocampal gyrus

Fusiform gyrus Raphe nuclear complex

Parietal

lobe

Parietal

lobe

Interhemispheric

fissure

Lateral

ventricle

Lateral

ventricl e

Cerebral Lateral ventriclLateral ventriclee

aqueduct

Cerebral

aqueduct

Central

gray

Central

gray

TTeeccttuumm

Oculomotor

nuclear complex

(III)

Oculomotor

nuclear complex

(III)

Superior

cerebellar

peduncle

Superior

cerebellar

peduncle

FFornixornix

Hippo-

campus

Hippo-

campus Ammon's hoAmmon's horrnn

Dentate gyruDentate gyruss

SubiculumSubiculum

Fimbria/Fimbria/ffornixornix

Caudate (tail)Caudate (tail)

White

matter

Cortical plate

Layer I

33

1010

55

55

66

77

88

22

11

1111

1111

Cingulate

gyrus

Cingulate

gyrus

CingulumCingulum

99

MidbraiMidbrainn

PPonsons

TTegmentumegmentum

ThalamusThalamus

44

CoCorpus callosurpus callosumm

Po

st

er

io

r

co

m

pl

ex

Po

st

er

io

r

co

m

pl

ex

Damaged areas in section

1212

1414

1313

Paracentral lo

bul

e

Paracentral lo

bu

le

Pretectum

1 Pa racentral neuroepithelium and subventricular zone

7 Te mporal neuroepithelium and subventricular zone

Pa rahippocampal neuroepithelium, subventricular zone,

(^6) and stratified transitional field
2 Pa racentral stratified transitional field
8 Te mporal stratified transitional field
Remnants of the germinal matrix, migratory streams, and transitional fields
11 Po sterior striatal neuroepithelium and subventricular zone
12 Strionuclear glioepithelium
13 Mesencephalic glioepithelium/ependyma
14 Subpial granular layer (cortical)
4 Callosal sling
5 Fo rnical glioepithelium
9 Alve ar glioepithelium
3 Callosal glioepithelium 10 Subgranular zone (dentate)
PLATE 13
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