front matter 1

central

trunk?

VVentral funiculusentral funiculus

Ventral horn

motoneurons

Ventral horn

motoneurons

Ventral horn

interneurons

Ventral horn

interneurons

Intermediate

interneurons

Intermediate

interneurons

Dorsal root

bifurcation zone

Fasciculus cuneatus

Fasciculus gracilis

Dorsal root

collateralization zone

Lissauer's tract

Dorsal funiculus

Dorsal

horn

Dorsal

horn Substantia

gelatinosa

Substantia

gelatinosa

Lateral

funiculus

Lateral

funiculus

Central

autonomic

area

Central

autonomic

area

Lateral horn

motoneurons

Lateral horn

motoneurons

Lamina ILamina I

Laminae

IV-V

Laminae

IV-V

ClarkClarke's columne's column

Dorsal root

Central canal

surrounded by ependyma

Central canal

surrounded by ependyma

central

trunk?

central

trunk?

central

trunk?

Ventral white

commissure

Ventral white

commissure

VVentral gray commissureentral gray commissure

Dorsal intermediate septum

Dorsal median septum

Ventral

median fissure

See the matched myelin stained section in Plates 96A and B

Refer to the matching myelin stained section for the approximate locations of both corticospinal tracts, the

rubrospinal, lateral reticulospinal, vestibulospinal, intraspinal, and spinocephalic tracts.

PLATE 97B