Plexus
A branching network of axons located out side of the CNS (Central Nervous System) is termed a(n) Plexus
The four primary nerve plexi are the cervical plexus, brachial plexus, lumbar plexus, and the sacral plexus.
The choroid plexus is a part of central nervous system in the brain and it consist of capillaries, ventricles and ependymal cells.
Read more about Plexus: In Invertebrates