ISSN:
0002-9106
Keywords:
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Medicine
Notes:
Dorsal and ventral roots were dissected bilaterally on spinal cords of adult monkeys: six rhesus, six irus and three baboons. Measurements made were: the distance between the uppermost cord attachments of successive nerve roots (segment length); the distance between the uppermost and lowermost fila within each root (root attachment length); and the distance beween the lowermost fila of one root and the uppermost fila of the subjacent root (interroot length). Segment lengths, dorsally and ventrally, are essentially alike within each species. In rhesus the average at various levels ranges from 4½ mm in cervical and sacral to 12½ mm in lower thoracic; in irus, from 4 mm in cervical and sacral to 10 mm in lower thoracic; in the baboon, from 5½ mm in cervical and sacral to 19 mm in lower thoracic. Within each species the dorsal and ventral root attachment lengths are similar, as are the interroot lengths, except in the lower thoracic levels. There dorsal interroot lengths range up to 3 mm longer than ventral. Cross sectional areas of the various levels were planimetrically determined. Within each species the largest areas are at lower cervical and lower lumbar levels. Individual segment volumes were calculated. In rhesus and irus these vary only about 60 mm3 from the largest to the smallest segment, excluding sacrocaudal levels. In baboon this difference is as much as 260 mm3.
Additional Material:
12 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/aja.1001160110
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