Changes

** [[Microscopic Anatomy of the Nephron - Anatomy & Physiology#Proximal Tubule| Proximal convoluted tubule]]

** [[Microscopic Anatomy of the Nephron - Anatomy & Physiology#Proximal Tubule| Proximal convoluted tubule]]

** [[Microscopic Anatomy of the Nephron - Anatomy & Physiology#The Distal Tubule| Distal convoluted tubule]]

** [[Microscopic Anatomy of the Nephron - Anatomy & Physiology#The Distal Tubule| Distal convoluted tubule]]

** [[Useful definitions - Renal Anatomy & Physiology#M| Medullary Rays]]

** [[WikiWords#Urinary Section| Medullary Rays]]

===Renal Medulla===

===Renal Medulla===

===Divisions of the Kidney===

===Divisions of the Kidney===

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

* The kidney is divided into [[WikiWords#Urinary Section| renal lobes]] from a structural point of view.

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

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

* Renal Pyramids are 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.

* They can also be 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]].

* They can also be subdivided into [[WikiWords#Urinary Section| renal lobules]] comprising of [[The Nephron - Anatomy & Physiology| nephrons]], [[WikiWords#Urinary Section| a medullary ray]] and [[Microscopic Anatomy of the Nephron - Anatomy & Physiology#Collecting Duct| a collecting duct]].

* In some species the kidneys are described as '''multipyramidal''' this means they have multiple lobes and pyramids.  Others are described as '''unipyramidal''' meaning they only have one lobe and pyramid.

* In some species the kidneys are described as '''multipyramidal''' this means they have multiple lobes and pyramids.  Others are described as '''unipyramidal''' meaning they only have one lobe and pyramid.