thoracic aortic (nervous) plexus

tho·rac·ic a·or·tic (nervous) plex·us

[TA] an autonomic plexus surrounding the thoracic aorta and passing with it through the aortic opening in the diaphragm to become continuous with the abdominal aortic plexus. Synonym(s): plexus (nervosus) aorticus thoracicus [TA]