The Human Brain During the Third Trimester

PLATE 66

1111

1010

GW37 Horizontal

CR 320 mm

Y301-62

Level 2: Section 441

10 mm

Middle frontal gyrus

Inferior frontal gyrus

Frontal

lobe

Frontal

lobe

Superior frontal gyrus

Precentral gyrus

Postcentral gyrus

Precuneus

Superior

parietal

lobu le

Supramarginal gyrus

Angular gyrus

Lateral vLateral ventricleentricle ChorChoroid plexusoid plexus

CCoorrppuuss ccaallollossuumm

Interhemispheric Interhemispheric ffissureissure

Paracentral

lobule

Paracentral

lobule

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

Layer I

Cortical plate

White matter

CCiningguulalatete ggyyrruuss CCiningguulalatete ggyyrruuss

InterInternal capsulnal capsulee

Basal gangliaBasal ganglia

Central sulcus

Precentral sulcus

Parietal

lobe

Parietal

lobe

11

22

66

55

33

44

77

88 99

1 Fr ontal neuroepithelium and subventricular zone

2 Fr ontal stratified transitional field

3 Callosal glioepithelium

8 Anterolateral striatal neuroepithelium and subventricular zone

9 Po sterior striatal neuroepithelium and subventricular zone

10 Strionuclear glioepithelium

11 Subpial granular layer

4 Pa rietal neuroepithelium and subventricular zone

5 Pa rietal stratified transitional field

6 Pa racentral neuroepithelium and subventricular zone

7 Pa racentral stratified transitional field