front matter 1

VVentral funiculusentral funiculus

Ventral horn

motoneurons

Ventral horn

motoneurons

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

DDorsalorsal

horn

Dorsal

horn

Substantia

gelatinosa

Substantia

gelatinosa

Lateral

funiculus

Lateral

funiculus

Central

autonomic

area

Central

autonomic

area

Lamina ILamina I

Laminae

IV-V

Laminae

IV-V

Clarke's column

(displaced neurons)

Dorsal root

with dense glia

in boundary cap

Clarke's

column

Clarke's

column

Central canal

surrounded by ependyma

Central canal

surrounded by ependyma

lower

trunk?

lower

trunk?

leleg?g?

thigh and

hip?

thigh and

hip?

Dorsal median

septum

VVentral gray commissureentral gray commissure

VVentral white commissureentral white commissure

Ventral median fissure

Lateral

corticospinal

tract?

Lateral

corticospinal

tract?

See the matched myelin stained section in Plates 86A and B

Refer to the matching myelin stained section for the approximate locations of the

lateral reticulospinal, vestibulospinal, intraspinal, and spinocephalic tracts.

PLATE 87B