lumbar plexus

noun

Medical Definition of lumbar plexus

: a plexus embedded in the psoas major and formed by the anterior or ventral divisions of the four upper lumbar nerves of which the first is usually supplemented by a communication from the twelfth thoracic nerve

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“Lumbar plexus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/lumbar%20plexus. Accessed 20 Oct. 2020.

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