front matter 1

Sp

ino

ce

ph

al

ic

tr

a

ct

s?

Sp

ino

ce

ph

al

ic

tr

a

ct

s?

VVentral funiculusentral funiculus

VVentral grayentral gray

Intermediate grayIntermediate gray

Dorsal root

collateralization zone

Fasciculus gracilis?

Lateral

funiculus

Lateral

funiculus

Vestibulospinal tract?

Dorsal grayDorsal gray

Dorsal root

Dorsal funiculus

Central canal

surrounded by ependyma

Central canal

surrounded by ependyma

Lateral
corticospinal
tract?

Dorsal root

bifurcation zone

Lissauer's tract

In

tras

pinal

tra

ct

I s?

nt

raspinaltr

ac

ts

?

Dorsal median septum

Ventral median fissure

VVentral white commissureentral white commissure

VVentral gray commissureentral gray commissure

See the matched cell body stained section in Plates 78A and B

PLATE 77B