The frequency of occurrence of Barnes' ventrolateral pyramidal tract
โ Scribed by Noboru Mizuno; Yasuhisa Nakamura; Michio Okamoto
- Publisher
- John Wiley and Sons
- Year
- 1968
- Tongue
- English
- Weight
- 575 KB
- Volume
- 134
- Category
- Article
- ISSN
- 0021-9967
No coin nor oath required. For personal study only.
โฆ Synopsis
In order to study the frequency of occurrence of Barnes' ventrolateral pyramidal tract, the lower parts of the medulla oblongata and the upper three cervical segments of the spinal cords of 210 adult Japanese were examined histologically.
The tracts were encountered in 43 out of 210 cases (20.5 2 2.8% ); bilaterally in (7.6 2 1.8% ), and unilaterally in 27 (12.9 t-2.3% ) cases. Consequently the tracts were found to be present in 59 out of 420 sides (14.0 f 1.7% ). Sex diffierence was not statistically significant ( ~2 = 0.6, d.f. = 1, p > 0.25).
๐ SIMILAR VOLUMES
The purpose of the present undertaking is to classify the mature, normal, myelinated fibers found within the pyramid of the human medulla. Although this region offers an exceptional opportunity to examine the morphology of a well known and isolated nerve tract of the central nervous system, few inve