front matter 1

VVentral funiculusentral funiculus

Central canal surrounded

by ependyma

Central canal surrounded

by ependyma

Ventral horn

motoneurons

Ventral horn

motoneurons

Ventral horn

motoneurons

Ventral horn

motoneurons

Ventral horn

interneurons

Ventral horn

interneurons

Intermediate

interneurons

Intermediate

interneurons

Dorsal root bifurcation zone

Superficial fasciculus gracilis

Deep fasciculus gracilis

Dorsal root collateralization zone

Dorsal funiculus

Lateral

funiculus

Lateral

funiculus

Central autonomic areaCentral autonomic area

Lissauer's

tract

Lateral

corticospinal

tract?

Lateral

corticospinal

tract?

Dorsal

horn Substantia

gelatinosa

Lamina I

Laminae

IV-V

lower

trunk?

lower

trunk?

hip?hip?

hip and

thigh?

hip and

thigh?

thigh?thigh?

leleg?g?

leleg and ankle?g and ankle?

foot?foot?

Dorsal median septum

Ventral median fissure

VVentral gray commissureentral gray commissure

VVentral white commissureentral white commissure

Refer to the matching myelin stained section

for the approximate locations of the vestibulo-

spinal, intraspinal, and spinocephalic tracts.

PLATE 59B

See the matched myelin stained section in Plates 58A and B