Changes

==Overview==

==Overview==

Phosphorus is the third most abundent intracellular ion:  

Phosphorus is the third most abundant intracellular ion:  

1. Potassium

1. Potassium

==Homeostasis==

==Homeostasis==

Serum concentrations of phosphorus are maintained by dietary sources. It is absorbed across the intestine via ''Passive diffusion'' and ''[[Calcium#Calcitriol (Active Vitamin D3)|Vitamin D]] mediated active transport''. Phosphorus is excreted in the urine or saliva (particularly in ruminants).

Serum concentrations of phosphorus are maintained by dietary sources. It is absorbed across the intestine via ''passive diffusion'' and ''[[Calcium#Calcitriol (Active Vitamin D3)|vitamin D]] mediated active transport''. Phosphorus is excreted in the urine or saliva (particularly in ruminants).

===Hormonal Regulation===

===Hormonal Regulation===

[[Calcium#Calcitriol (Active Vitamin D3)|'''Calcitriol''']]

[[Calcium#Calcitriol (Active Vitamin D3)|'''Calcitriol''']]

Calcitriol increases phosphorus absorbtion from the intestines.

Calcitriol increases phosphorus absorption from the intestines.

==Pathology==

==Pathology==

Diseases relating to phosphorus homeostasis include:

Diseases relating to phosphorus homeostasis include:

1. [[Bones Metabolic - Pathology#Primary hyperparathyroidism |Primary and Secondary Hyperparathyroidism]]

1. [[Hyperparathyroidism |Primary and Secondary Hyperparathyroidism]]

2. [[Kidney Renal Failure - Pathology#Uraemia |Hyperphosphataemia]]

2. Hyperphosphataemia

3. Hypophosphatemia

3. Hypophosphatemia

[[Category:Endocrine System - Anatomy & Physiology]]

[[Category:Endocrine System - Anatomy & Physiology]]

[[Category:Electrolytes]]

[[Category:Electrolytes]]

[[Category:To Do - A&P]]

[[Category:A&P Done]]

[[Category:Minerals]]