A tumor type of this non-skin organ was classically described by the “rule of 10s.” Harvey, Kirsten, and a proto-oncogene named after a malignancy most often found in this organ comprise the human Ras genes. Greater amplification of the N-myc gene correlates with a worse prognosis for that pediatric tumor in this organ (-5[1])and often corresponds (-5[1])to increased levels of homovanillic acid. (-5[1])MIBG accumulates in cells in this organ that share an affinity for chromium salt staining with similarly named (*) serotonin-secreting “entero” cells in the GI tract. (-5[1])Pheochromocytomas (10[2]-5[2])originating from this organ's chromaffin cells (-5[1])can paroxysmally (10[1])secrete high levels of catecholamines. This organ’s (-5[1])cortex secretes glucocorticoid (-5[1])hormones, including cortisol. (10[1]-5[2])For 10 points, (10[1])name this paired (-5[1])organ (10[1])whose medulla (-5[1])produces (10[1]-5[2])the majority (-5[1])of epinephrine. (10[4]0[1])■END■ (10[4]0[7])