Inner medulla of kidney

Definition

Innermost region of the mammalian kidney.

Also known as inner renal medulla, inner zone of medulla of kidney, inner zone of renal medulla, renal inner medulla, set of inner region of renal pyramids, zona interna (medullaris renalis), zona interna medullae renalis — per UBERON

The Inner medulla of kidney is a part of the Urinary.