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lumbar plexus

noun, Anatomy.
a network of nerves originating in the spinal nerves of the midback region and innervating the pelvic area, the front of the legs, and part of the feet. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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lumbar plexus in Medicine

lumbar plexus n.

  1. A nerve plexus formed by the ventral branches of the first four lumbar nerves and lying in the substance of the psoas muscle.

  2. A lymphatic plexus formed of about twenty lymph nodes and connecting vessels situated along the aorta and the common iliac vessels.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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