The Human Brain During the Third Trimester

GW29 Coronal

CR 260 mm

Y14-59

Level 2: Section 501

Superior frontal gyrus

Olfactory peduncle

Olfactory sulcus

Subcallosal area

Cingulate

gyrus

Cingulum

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Tenia tecta

(dorsal)

Te nia tecta

(dorsal)

Corpus

callosum

(genu)

Corpus

callosum

(genu)

Middle frontal gyrus

Layer I

Inferior frontal gyrus

Orbital gyri

Putamen

Insular gyrus

Claustrum

External capsule

Caudate (head)

Internal capsule (anterior limb)

Gyrus rectus

Interhemispheric fissure

Basal

ganglia

Basal

ganglia

Frontal

lobe

Frontal

lobe

Frontal

lobe

Frontal

lobe

Lateral ve ntricle Cortical plate

White matter

Lateral fissure

1 Fr ontal neuroepithelium and subventricular zone

2 Fr ontal stratified transitional field

Fr ontal neuroepithelium and subventricular zone (intermingled with

(^4) the source of the rostral migratory stream)
5 Rostral migratory stream
6 Anterolateral striatal neuroepithelium and subventricular zone
3 Callosal glioepithelium
33
33
11
22
22
44
5
66
Remnants of the germinal matrix, migratory streams, and transitional fields
Damaged areas in section
PLATE 152