front matter 1

S

pi

n

o

c

e

p

h

a

li

c

tr

a

c

ts

?

S

pi

n

o

c

e

p

h

a

li

c

tr

a

c

ts

?

VVentral funiculusentral funiculus

VVentral grayentral gray

Intermediate grayIntermediate gray

Dorsal root

bifurcation zone

Fasciculus gracilis

Dorsal root

collateralization zone

Lissauer's tract

Dorsal root

Ventral root

Lateral

funiculus

Lateral

funiculus

Lateral corticospinal tractLateral corticospinal tract

Vestibulospinal tract?

Dorsal grayDorsal gray

Myelinated terminals of

dorsal root collaterals

Dorsal funiculus

Central canal

surrounded by ependyma

Central canal

surrounded by ependyma

Myelinated axons

of ventral horn

motoneurons

Myelinated axons

of ventral horn

motoneurons

Intraspi

na

l

tr

ac

ts

?

Intraspi

na

l

tr

ac

ts

?

Subgelatinosal pleSubgelatinosal plexusxus

Reticulated areaReticulated area

Lateral

reticulospinal tract?

Lateral

reticulospinal tract?

VVentral white commissureentral white commissure

VVentral gray commissureentral gray commissure

Dorsal median septum

Ventral

median fissure

See the matched cell body stained section in Plates 89A and B

PLATE 88B