GENERAL HISTOLOGY

Detailed explanation-1: -A nerve plexus is a network of intersecting nerves; multiple nerve plexuses exist in the body. Nerve plexuses are composed of afferent and efferent fibers that arise from the merging of the anterior rami of spinal nerves and blood vessels.

Detailed explanation-2: -The term plexus refers to a “web” of nerves that is created just lateral to where T12-L5 exit the spinal cord via intervertebral foramina. The plexus exists bilaterally and allows nerves to combine with different levels to create multiple functioning nerves that serve to innervate various structures.

Detailed explanation-3: -Spinal Plexus This plexus of nerves serves your chest, shoulder, and arms. The median, ulnar, and radial nerves-the three major nerves of your arm-originate from the brachial plexus. Lumbar plexus: The lumbar plexus originates from lumbar levels one through four and serves muscles and skin in your hip and thigh.