Anterior proper fasciculus
Encyclopedia
The remaining fibers of the anterior funiculus
constitute what is termed the anterior proper fasciculus, fasciculus proprius, or fasiculus proprii (anterior basis bundle).
It consists of
Anterior funiculus
The most lateral of the bundles of the anterior nerve roots is generally taken as a dividing line that separates the antero-lateral region into two parts, viz., an anterior funiculus, between the anterior median fissure and the most lateral of the anterior nerve roots; and a lateral funiculus,...
constitute what is termed the anterior proper fasciculus, fasciculus proprius, or fasiculus proprii (anterior basis bundle).
It consists of
- (a) longitudinal intersegmental fibers which arise from cells in the gray substance, more especially from those of the medial group of the anterior column, and, after a longer or shorter course, reënter the gray substance;
- (b) fibers which cross in the anterior white commissureAnterior white commissureThe anterior white commissure, also known as the alba anterior medullae spinalis, is a bundle of nerve fibers which cross the midline of the spinal cord just anterior to the gray commissure...
from the gray substance of the opposite side.
See also
- Lateral proper fasciculusLateral proper fasciculusThe lateral proper fasciculus constitutes the remainder of the lateral column, and is continuous in front with the anterior proper fasciculus....
- Posterior proper fasciculusPosterior proper fasciculusThe posterior proper fasciculus arises from cells in the posterior column; their axons bifurcate into ascending and descending branches which occupy the ventral part of the funiculus close to the gray column.They are intersegmental and run for varying distances sending off collaterals and...