Sex is a primary reward and it is the basis of pair-bond formation in voles. The striatum is part of the neuronal circuitry underlying a remarkable pair-bond formation in which both partners remain monogamous. It is important to note that the role of the striatum extends beyond that of movement and reward.
in human nervous system: The spinal cord. Associated with local regions of the spinal cord and imposing on it an external segmentation are 31 pairs of spinal nerves, each of which receives and furnishes one dorsal and one ventral root.
(March 2014). A nerve plexus is a plexus (branching network) of intersecting nerves. There are spinal nerve plexuses; as well as other forms of autonomic plexuses, many of which are a part of the enteric nervous system.or the spinal plexuses, except for the ventral rami of Th2-Th12 nerves, they combine sets of ventral rami of spinal nerves that serve the same area of the body into one large grouped nerve. There are several in the body, including: 1  Cervical plexus-serves the head, neck and shoulders.