The Human Brain During the Third Trimester

Fourth ve ntricle

PPonsons

GW30 Horizontal

CR 260 mm

Y187-65

Level 15: Section 1001

Fusiform

gyrus?

Fusiform

gyrus?

TTeemmppoorraal lol lobbee

Occipital

lobe?

Occipital

lobe?

Interhemispheric

fissure

Middle temporal gyrus

Inferior temporal gyrus

Layer I

Cortical plate

White matter

22

33

4

55

6

11

7

Uncus

Pontine gray

Entorhinal cortex

CEREBELLUMCEREBELLUM

VVermisermis

HemispheHemispherree

Lateral

ventricle

Lateral ventricle

Transpontine corticofugal tract

Parahippocampal gyrus

Pa rahippocampal neuroepithelium and

(^1) subventricular zone
2 Pa rahippocampal stratified transitional field
5 Amygdaloid glioepithelium/ependyma
3 Alve ar glioepithelium
4 Lateral migratory stream (cortical)
7 Subpial granular layer (cortical)
6 External germinal layer (cerebellum)
Remnants of the germinal matrix, migratory streams, and transitional fields
See detail of brain core and
cerebellum in Plates 144A and B.
Damaged areas in section
PLATE 126