noun, plural: paraaortic bodies
A small mass of chromaffin cells derived from neural crest, located near sympathetic ganglia along the abdominal aorta, and serves in homeostatic regulation of blood pressure and in secretion of catecholamines into the fetal circulation during the early gestational period.
Word origin: from Gk para-, comb. form repr. pará (prep.) beside, alongside of, by, beyond + aortic < Gk aorte, the great artery, lit., something hung, carried; akin to aeírein to lift, carry.