posterior root n.
See dorsal root.
The section especially illustrates the attachment of the posterior root to the spinal cord.
The rudiments are, in fact, those of the posterior root only.
The posterior root is always purely sensory; it always develops a ganglion.
The rudiment of the ganglion (g) on the posterior root has appeared.
This investment completely surrounds the proximal portion of the posterior root, but vanishes near its distal extremity.
The junction of the posterior root with the spinal cord is easier to observe than in the last stage.
I have given a figure of the development of a posterior root of a cranial nerve in fig.
It has a ganglion, like the spinal nerves upon its posterior root.
The rudiment of the posterior root is seen surrounded by connective-tissue, from which it cannot easily be distinguished.
The posterior root is distinguished by possessing a ganglion of gray matter, and by a somewhat larger size.