Skip to main content

Unfortunately we don't fully support your browser. If you have the option to, please upgrade to a newer version or use Mozilla Firefox, Microsoft Edge, Google Chrome, or Safari 14 or newer. If you are unable to, and need support, please send us your feedback.

Publish with us
Lumbar Spinal Roots & Ganglia (Left)
Nervous System

Lumbar Spinal Roots & Ganglia (Left)

Radicis et ganglia spinalia lumbales

Read more


Five of the 31 pairs of spinal nerves emerge from the lumbar spine. These five pairs of spinal nerves are known as the lumbar nerves and are numbered from the first to the fifth lumbar nerves.

The lumbar nerves are mixed nerves as each is formed by the union of a posterior (sensory nerve fibers) and an anterior root (motor nerve fibers). A spinal (dorsal root) ganglion is located at the proximal end of each posterior root. These ganglia contain the cell bodies of sensory nerve fibers. Each of the five lumbar nerves terminates by dividing into anterior and posterior rami.

The first to fourth lumbar nerves give rise to anterior rami that together form the lumbar plexus. The fourth and fifth lumbar nerves give rise to anterior rami that combine with anterior rami from the first to fourth sacral nerves, forming the sacral plexus. Often, the sacral and lumbar plexus are collectively referred to as the lumbosacral plexus.

Complete Anatomy
The world's most advanced 3D anatomy platform
Try it for Free

Learn more about this topic from other Elsevier products

Nerve Root

ScienceDirect image

Adherent nerve root is a particular type of dysfunction that typically follows an episode of radicular pain after which pain can be elicited when the nerve root and its adhering scar tissue are stretched.

Explore on ScienceDirect(opens in new tab/window)

Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy