ABSTRACT
Name Myelination
Reactive glia Proliferating glia
DORSAL FUNICULUS:
LATERAL and VENTRAL FUNICULI:
dorsal root col. zone --- Very denseMany fibers deep fas. gracilis --- Very denseMany fibers superficial fas. gracilis Dense DenseSome fibers
lat. reticulospinal tract Dense SparseSome fibers intraspinal tracts Dense SparseSome fibers spinocephalic tracts
rubrospinal tract
Dense SparseSome fibers
spinocerebellar tracts Dense DenseSome fibers Dense SparseSome fibers
vestibulospinal tract Dense SparseSome fibers
dorsal root bif. zone Many fibers* Sparse---
ven. commissure Many fibers Sparse---
Lissauer's tract Very sparse--- None
lat. cortricospinal tract Very sparse--- Very sparse ven. cortricospinal tract Very sparse--- Sparse
* intermingled in a bed of nonreactive glia (associated with Lissauer's tract fibers?)
Plates 54A, 54B Lower Thoracic Total area: 5.1272 mm2
Plates 55A, 55B Lower Thoracic
Total area: 5.2380 mm2
Plates 56A, 56B Upper Lumbar Total area: 6.9121 mm2
Plates 57A, 57B Upper Lumbar
Total area: 7.1380 mm2
Plates 58A, 58B Lumbar Enlargement Total area: 9.7553 mm2
Plates 60A, 60B Sacral/Coccygeal Total area: 3.5153 mm2
Plates 59A, 59B Lumbar Enlargement
Total area: 10.918 mm2
Plates 61A, 61B Sacral/Coccygeal
Total area: 3.5751 mm2
Central canal .0012 Ependyma .0057 Gray matter 1.4171 White matter 3.7032
Ventral white commissure Ventral gray commissure
Ventral corticospinal tract?
