front matter 1

VVVentral funiculusentral funiculusentral funiculus

Ventral

corticospinal

tract

Ventral

corticospinal

tract

Ventral horn

motoneurons

Ventral horn

motoneurons

Ventral horn

interneurons

Ventral horn

interneurons

Intermediate

interneurons

Intermediate

interneurons

Dorsal root bifurcation zone

Superficial fasciculus cuneatus

Deep fasciculus cuneatus

Superficial fasciculus gracilis

Deep fasciculus gracilis

Dorsal root collateralization zone

Lissauer's

tract

Dorsal funiculus

Dorsal

horn

neck?neck?

Substantia

gelatinosa

Substantia

gelatinosa

Lateral

funiculus

Lateral

funiculus

Central

autonomic

area

Central

autonomic

area

Lateral
cervical
nucleus

Lateral
cervical
nucleus

Lamina ILamina I

Laminae

IV-V

Laminae

IV-V

Central

cervical

nucleus?

Central

cervical

nucleus?

Lateral

corticospinal

tract

Lateral

corticospinal

tract

Central canal

surrounded by ependyma

Central canal

surrounded by ependyma

shoulder

and arm?

shoulder

and arm?

shoulder?shoulder?

arm and

forearm?

arm and

forearm?

wrist and

hand?

wrist and

hand?

digits?digits?

S

p

in

oc

er

eb

el

la

r

tr

a

c

ts

?

S

p

in

oc

er

eb

el

la

r

tr

a

c

ts

?

Ventral white

commissure

Ventral white

commissure

Ventral gray

commissure

Ventral gray

commissure

Ventral median fissure

Dorsal median septum

Dorsal intermediate septum

See the matched myelin stained section in Plates 65A and B

Refer to the matching myelin stained section for the

approximate locations of the lateral reticulospinal,

vestibulospinal, intraspinal, and spinocephalic tracts.

PLATE 66B