In anatomy, a plexus (from the Latin term for 'braid') is a branching network of Blood vessel, Lymphatic vessel, or Nerve. The nerves are typically Axon outside the central nervous system.
The standard plural form in English is plexuses.
Types
Nerve plexuses
The four primary
are the
cervical plexus,
brachial plexus,
lumbar plexus, and the
sacral plexus.
Cardiac plexus
Celiac plexus
Renal plexus
Venous plexus
Choroid plexus
The
choroid plexus is a part of the central nervous system in the
brain and consists of capillaries,
, and
ependymal cells.
Invertebrates
The plexus is the characteristic form of nervous system in the
and persists with modifications in the
. The nerves of the
Radial symmetry also take this form, where a plexus underlies the
germ layer of these animals and deeper in the body other nerve cells form plexuses of limited extent.
See also
