part of part of has part has part surrounded by contributes to morphology of type II cell of adrenal medulla type I cell of adrenal medulla medulla of organ adrenal cortex adrenal medulla GAID:451 adrenal gland medulla AAO:0011010 chromaffin cells The inner portion of the adrenal gland that consists mainly of chromaffin cells which produce, store and secrete neurotransmitters such as epinephrine and norepinephrine. NCIT:C12397 medulla of glandula suprarenalis UBERON:0001236 MAT:0000495 suprarenal medulla medulla of suprarenal gland SCTID:362585001 medulla (glandula suprarenalis) medulla glandulae suprarenalis CALOHA:TS-0018 adrenal central medulla FMA:15633 EV:0100137 MA:0000119 VHOG:0001378 EMAPA:18428 BTO:0000049 MESH:D019439 XAO:0000166 EFO:0000852 Wikipedia:Adrenal_medulla medulla of adrenal gland adrenal gland neural crest-derived structure