The renal outer medulla is the region of the kidney that lies between the renal cortex and the renal inner medulla[GO]. [ GOC:mtg_kidney_jan10 http://dx.doi.org/10.1371/journal.pone.0099864 ]

Synonyms: zona externa (medullaris renalis) outer zone of medulla of kidney renal outer medulla outer zone of renal medulla outer renal medulla zona externa medullae renalis