part_of part of part of develops_from develops from develops from endocrine gland intermediate mesoderm mesoderm-derived structure adrenal/interrenal gland adrenal gland/interrenal tissue suprarenal gland - interrenal gland adrenal gland - interrenal gland adrenal - interrenal gland This gland can either be a discrete structure located bilaterally above each kidney, or a cluster of cells in the head kidney that perform the functions of the adrenal gland. In either case, this organ consists of two cells types, aminergic chromaffin cells and steroidogenic cortical cells[GO] chromaffin system neural crest-derived structure