CELIAC PLEXUS By N., Pam M.S. - April 7, 2013 Nervous system. Network of fibres that lay anterior to the aorta at the 12th thoracic vertebrae. Lymphatic system. Network of effernet and afferent lymphatic vessels in the abdomen. CELIAC PLEXUS: "The celiac plexus lies behind the aorta." Related Psychology Terms CELIAC PLEXUS BRACHIAL PLEXUS LUMBOSACRAL PLEXUS GRAY RAMUS EXTRAFUSAL FIBER SENSORIMOTOR MESODERM LINGUAL NERVE AUTONOMIC DYSREFLEXIA GRAY COMMISSURE Cite this page: N., Pam M.S., "CELIAC PLEXUS," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/celiac-plexus-2/ (accessed August 7, 2020).