14.5 Plexuses

• There are four major nerve plexuses: cervical, brachial, lumbar, and sacral
• Such a complex, interwoven network of nerves is called a nerve plexus
• The Cervical Plexus. Composed of cutaneous and muscular branches of the ventral rami of spinal nerves c1-c4 and some nerve fibers from c5
• The Brachial Plexus. Larger and more complex than vertical plexus
• The Lumbar and Sacral Plexus. Lumbar plexus and sacral plexus originate from lumbar and sacral segments of spinal cord