The Termination of Ulnar and Radial Nerves in the Cuneate and External Cuneate Nuclei. A trans ganglionic Horseradish Peroxidase (HRP) study

Abstract

This study seeks to extend the observations of previous studies of projection of primary afferent fibers from the forelimb nerves and muscles to the cuneate and neuronal marker, horseradish peroxidase to the central cut ends of the two main forelimb nerves, namely the ulnar and radial nerves, labelled terminals of the primary afferent fibers in the cuneate nuclei were studied under light microscope. The results show that the terminals of ulnar nerve were mostly located in the medical parts of the cunate and external cuneate nuclei while the radial nerve terminals were observed in the dorsal and dorsolateral areas of the cuneate and medical part of the external cuneate nucleus.