What are lumbar plexus?

  • (noun): A lymphatic plexus located along the lower portion of the aorta and iliac vessels.
    Synonyms: plexus lumbalis
    See also — Additional definitions below

Lumbar Plexus

The lumbar plexus is a nervous plexus in the lumbar region of the body which forms part of the lumbosacral plexus. It is formed by the ventral divisions of the first four lumbar nerves (L1-L4) and from contributions of the subcostal nerve (T12), which is the last thoracic nerve. Additionally, the ventral rami of the fourth lumbar nerve pass communicating branches, the lumbosacral trunk, to the sacral plexus. The nerves of the lumbar plexus pass in front of the hip joint and mainly support the anterior part of the thigh.

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Some articles on lumbar plexus:

Nerve Plexus - Lumbar Plexus
... Since the Lumbar plexus and Sacral plexus are interconnected, they are sometimes referred to as the Lumbosacral plexus ... afferent sensory innervation are the only ones that do not originate from a plexus ... spinal nerves with a contribution of T12 form Lumbar plexus ...
Lumbar Plexus - Additional Images
... chain and its connections with the thoracic, abdominal, and pelvic plexuses Lumbar plexus after dissection Lumbar plexus after dissection ...
Human Leg - Anatomy - Neurovascular System - Nerves
... innervation to the lower limb is supplied by the lumbosacral plexus, which is formed by the ventral rami of the lumbar and sacral spinal nerves with additional contributions from the ... Based on distribution and topography, the lumbosacral plexus is subdivided into the lumbar plexus (T12-L4) and the Sacral plexus (L5-S4) the latter is often further subdivided into the sciatic and pudendal ... The larger branches of the plexus exit the muscle to pass sharply downward to reach the abdominal wall and the thigh (under the inguinal ligament) with the exception of the obturator nerve which ...
Obturator Nerve - Additional Images
... Sacral plexus of the right side Right hip bone ... Right side Plan of lumbar plexus The lumbar plexus and its branches Deep and superficial dissection of the lumbar plexus Dissection of side wall of pelvis showing sacral and pudendal plexuses Obturator ...

More definitions of "lumbar plexus":

  • (noun): A plexus of nerves formed by the ventral branches of the first four lumbar nerves.
    Synonyms: plexus lumbalis