front matter 1

Floor plateFloor plate

Ventral horn

interneurons

Ventral horn

interneurons

Intermediate

interneurons

Intermediate

interneurons

Dorsal root

bifurcation zone

Fasciculus gracilis

Dorsal root

collateralization zone

Lissauer's

tract?

Dorsal

funiculus

Dorsal

horn Substantia

gelatinosa

Substantia

gelatinosa

EpendymaEpendyma

Lamina ILamina I

Laminae

IV-V

Laminae

IV-V

trunktrunk

trunktrunk

hip?hip?

hip and

thigh?

hip and

thigh?

ankle

and foot?

ankle

and foot?

ankle

and foot?

ankle

and foot?

leleg?g?

thigh?thigh?

leleg?g?

Central

canal

Central

canal

Central

autonomic

area

Central

autonomic

area

Ventral white

commissure

Ventral

median fissure

Retreating roof plate

Dorsal median septum

V e n t r a l

fu

nic

ulus

V e n t r a l

fu

nic

ulus

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

Ventral horn

motoneuron

columns

Ventral horn

motoneuron

columns

PLATE 27B