front matter 1

VVVentral funiculusentral funiculusentral funiculus

Ventral horn

motoneurons

Ventral horn

motoneurons

Ventral horn

interneurons

Ventral horn

interneurons

Intermediate

interneurons

Intermediate

interneurons

Dorsal root

bifuracation zone

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

Lamina ILamina I

Laminae

IV-V

Laminae

IV-V

Dorsal root

with band of

dense glia in

boundary cap

Ventral root

Central canal

surrounded by ependyma

Central canal

surrounded by ependyma

lower

trunk?

lower

hip?hip? trunk?

hip?hip?

thigh?thigh?

leleg?g?

ankle

and foot?

ankle

and foot?

foot and toes?foot and toes?

Dorsal median

septum

VVentral gray commissureentral gray commissure

VVentral white commissureentral white commissure

Ventral median fissure

See the matched myelin stained section in Plates 88A and B

Refer to the matching myelin stained section for the approxi-

mate locations of the lateral corticospinal, lateral reticulospinal,

vestibulospinal, intraspinal, and spinocephalic tracts.

PLATE 89B