Changes

* The kidney is divided into [[Useful definitions - Renal Anatomy & Physiology#R| renal lobes]] from a structural point of view.

* The kidney is divided into [[Useful definitions - Renal Anatomy & Physiology#R| renal lobes]] from a structural point of view.

* These are then subdivided into [[Useful definitions - Renal Anatomy & Physiology#R| renal lobules]] comprising of [[The Nephron - Anatomy & Physiology| nephrons]], [[Useful definitions - Renal Anatomy & Physiology | a medullary ray]] and [[Microscopic Anatomy of the Nephron - Anatomy & Physiology#Collecting Duct| a collecting duct]].

* These can then be divided into a renal pyramid and the piece of cortex above it

* Renal Pyramids are also an important descriptor of part of the kidney.

* Renal Pyramids are important descriptor of part of the kidney.

**These structures are visible grossly are the region of the medulla which appears triangular in cross section. They are actually cone shaped and the pointed part which faces towards the renal pelvis is termed the apex and the part against the cortex the base.

**These structures are visible grossly are the region of the medulla which appears triangular in cross section. They are actually cone shaped and the pointed part which faces towards the renal pelvis is termed the apex and the part against the cortex the base.

===Innervation===

===Innervation===