The Human Brain During the Third Trimester

Induseum griseum

Olfactory sulcus

GW37 Coronal

CR 350 mm

Y217-

Level 3: Section 361

Claustrum

Caudate (head)Caudate (head)

Lateral

fissure

Gyrus rectus

Superior frontal gyrus

Middle frontal gyrus

Frontal

lobe

Frontal

lobe

Interhemispheric

fissure

Inferior frontal gyrus

Insular gyrus

Damaged areas in section

L

at

er

al

ve

nt

ri

cle

Orbital gyri

Inferior rostral gyrus

White matter

Cortical plate

Layer I

2 Fr ontal neuroepithelium and subventricular zone

3 Fr ontal stratified transitional field

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

33

33

4

6

22 55

22

11

1 Rostral migratory stream (source area)

5 Anterolateral striatal neuroepithelium and subventricular zone

6 Subpial granular layer (cortical)

4 Callosal glioepithelium

Cingulate

gyrus

Cingulate

gyrus

Cingulate

gyrus

Cingulate

gyrus

Corpus

callosum

(genu)

Corpus

callosum

(genu)

C

in

gu

lu

m

C

in

gu

lu

m

PLATE 3