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

Dorsal root

collateralization zone

Fasciculus gracilis?

Lissauer's

tract

Dorsal funiculus

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

Central canal

with surrounding ependyma

Central canal

with surrounding ependyma

lo

wer trunk?

lower trunk?

Ventral white

commissure

Ventral white

commissure

Ventral gray

commissure

Ventral gray

commissure

Ventral median fissure

Dorsal median septum

See the matched myelin stained section in Plates 77A and B

In this section, the dorsal funiculus still shows some myelination gliosis, indi-

cating that this level of the spinal cord is more immature than rostral levels.

The lateral funiculus has a very sparse population of proliferating glia through-

out, and the border of the lateral corticospinal tract is not visible. Refer to the

matching myelin stained section for the approximate locations of the lateral

reticulospinal, vestibulospinal, intraspinal, and spinocephalic tracts.

PLATE 78B