front matter 1

Roof

plate

Roof

plate

Floor plateFloor plate

Ventral horn

motoneuron

column

Ventral horn

interneurons

Ventral horn

interneurons

Intermediate

interneurons

Intermediate

interneurons

Dorsal root

Dorsal root bifurcation zonebifurcation zone

Fasciculus cuneatus

Fasciculus gracilis

Dorsal root collateralization zone

Lissauer's

tract?Lissauer's tract

Dorsal funiculus

Dorsal

horn Substantia

gelatinosa

Substantia

gelatinosa

EpendymaEpendyma

Central

autonomic

area

Central

autonomic

area

Lamina ILamina I

Laminae

IV-V

Laminae

IV-V

Clarke's column?

Central canalCentral canal

Lateral horn

motoneurons

(autonomic)

trunktrunk

Dorsal median septum

Dorsal intermediate septum

Ventral median fissure

Ventral white

commissure

Ventral white

commissure

Ventral gray

commissure

V

e

n

t

r

a

l

fun

icu

lu

s

V

e

n

t

r

a

l

fun

icu

lu

s

L a t e r a l f u n i c u l u s

L a t e r a l f u n i c u l u s

PLATE 32B