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celiac (nerve) plexus


Definition: the most substantial, superior portion of the abdominal aortic plexus lying anterior to the aorta at the level of origin of the celiac trunk (vertebral level T-12); the celiac ganglia lie within the plexus; it is formed by contributions from the greater splanchnic and vagus (especially the posterior or right vagus) nerves and communicating branches to and from the superior mesenteric and renal plexuses and ganglia; most sympathetic, parasympathetic and visceral afferent fibers serving the abdominal viscera pass through this plexus.

Synonym(s): plexus coeliacusTA, plexus (nervosus) celiacusTA, solar plexus

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.