VVentral funiculusentral funiculus
Ventral
corticospinal
tractVentral
corticospinal
tractCentral canal with surrounding ependymaCentral canal with surrounding ependymaVentral horn
motoneuronsVentral horn
motoneuronsVentral horn
interneuronsVentral horn
interneuronsIntermediate
interneuronsIntermediate
interneuronsDorsal root
bifurcation zoneSuperficial fasciculus cuneatusDeep fasciculus cuneatusSuperficial fasciculus gracilisDeep fasciculus gracilisDorsal root
collateralization zoneLissauer's
tractDorsal funiculus
Dorsal
horn
Dorsal
horn
neck
and skull?neck
and skull?Substantia
gelatinosaSubstantia
gelatinosaLateral
funiculus
Lateral
funiculus
Central autonomic areaCentral autonomic areaLateral
cervical
nucleusLateral
cervical
nucleusLamina ILamina ILaminae
IV-VLaminae
IV-VCentral
cervical
nucleus?Central
cervical
nucleus?Lateral
corticospinal
tractLateral
corticospinal
tractVentral white
commissureVentral white
commissureVentral gray
commissureVentral gray
commissureshoulder?shoulder?forearm
and wrist?forearm
and wrist?arm and
shoulder?arm and
shoulder?S
p
in
o
ce
re
b
el
la
r
tr
a
c
ts
?S
p
in
o
ce
re
b
el
la
r
tr
a
c
ts
?Examples of concentrations
of proliferating glia
Very sparseSparseVentral median fissureDorsal median septumDorsal intermediate septumSee the matched myelin stained section in Plates 63A and B
Only the corticospinal and spinocerebellar tracts can be clearly delineated in the ventral and lateral funiculi. The cortico-
spinal tracts stand out as clear areas with very sparse proliferating glia. The spinocerebellar tracts have a slightly more
dense concentration of proliferating glia. A sparse population of proliferating glia fi lls the remaining ventral and lateral
funiculi and contains several fi ber tracts (unlabeled in this section). Refer to the matching myelin stained section for the
approximate locations of the lateral reticulospinal, vestibulospinal, intraspinal, and spinocephalic tracts.PLATE 64B