front matter 1

VVentral funiculusentral funiculus

Ventral horn

motoneurons

Ventral horn

motoneurons

Lateral horn
motoneurons

Lateral horn
motoneurons

Ventral horn

interneurons

Ventral horn

interneurons

Intermediate

interneurons

Intermediate

interneurons

Dorsal root bifurcation zone

Fasciculus cuneatus

Fasciculus gracilis

Dorsal root collateral-

ization zone

Lissauer's

tract

Dorsal funiculus

Dorsal

Dorsalhorn

horn Substantia

gelatinosa

Substantia

gelatinosa

Lateral

funiculus

Lateral

funiculus

EpendymaEpendyma

Central autonomic areaCentral autonomic area

Lamina ILamina I

Laminae

IV-V

Laminae

IV-V

ClarkClarke's columne's column

Central canalCentral canal

VVentral corticospinal tractentral corticospinal tract

Lateral

corticospinal

tract

Lateral

corticospinal

tract

Example of dense proliferating glia

Example of sparse proliferating glia

Example of very sparse proliferating glia

trunktrunk

VVentral gray commissureentral gray commissure

VVentral white commissureentral white commissure

Ventral median fissure

Dorsal median septum

Dorsal intermediate septum

S p i n o c e r e b e l l a r t r a c t s

S p i n o c e r e b e l l a r t r a c t s

Refer to the matching myelin stained section

for the approximate locations of the vestibulo-

spinal, intraspinal, and spinocephalic tracts.

PLATE 52B

See the matchedmyelin stained section in Plates 48A and B