The Human Brain During the Third Trimester

GW29 Coronal

CR 260 mm

Y14-59

Level 19: Section 1521

Precuneus

Angular gyrus

Middle

temporal

gyrus?

Ce

reb

ell

um

(he

mi

sph

er

e)

Ce

reb

ell

um

(he

mi

sph

er

e)

Interhemi-

spheric fissure

Calcarine

fissure

CuneusCuneus

Primary visual

cortex

Parietal

lobe

Parietal

lobe

Temporal

lobe?

Te mporal

lobe?

Occipital

lobe

Occipital

lobe

Cerebellum

(vermis)

Cerebellum

(vermis)

Occipital

gyri

Lateral

ventricl e

Layer I

Cortical plate

White matter

1 Pa rietal neuroepithelium and subventricular zone

2 Pa rietal stratified transitional field

3 Occipital neuroepithelium and subventricular zone

6 Te mporal stratified transitional field?

5 Te mporal neuroepithelium and subventricular zone?

8 Subpial granular layer (cortical)

7 External germinal layer (cerebellum)

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

4 Occipital stratified transitional field

33

11

22

44

55

66

7

8

7

Parieto-

occipital

sulcus

Parieto-

occipital

sulcus

PLATE 169