Premium
The postnatal development of the spinal cord of the dog
Author(s) -
Fox Michael W.,
Inman Ottilie R.,
Himwich Williamina A.
Publication year - 1967
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.901300305
Subject(s) - spinal cord , biology , anatomy , fasciculus , dorsum , corticospinal tract , lumbar , white matter , neuroscience , medicine , magnetic resonance imaging , diffusion mri , fractional anisotropy , radiology
The postnatal myelinization of the dorsal, lateral and vertral funiculi in the spinal cord of the dog occurs rapidly during the first three weeks of life, with the exception of the fasciculus gracilis and lateral corticospinal tract in which myelin is not complete until after five weeks. The ventral (motor) grey columns are more developed in younger animals than the corresponding dorsal columns. Both ventral and dorsal columns reach adult form by five weeks of age, but the lateral columns mature later. Only slight morphological differences were found in the rate of development of cervical and lumbar segments, the latter maturing a little later. These findings are compared with earlier studies in the cat, and correlated with observations on reflex and locomotor development of the dog.