Changes

Hormones have a large effect on the skin, details of which can be found at [[Skin - Anatomy & Physiology - Endocrine & Nutritional Influences]].

Hormones have a large effect on the skin, details of which can be found at [[Skin - Anatomy & Physiology - Endocrine & Nutritional Influences]]. As a result [Endocrine effects on the skin|Endocrine associated skin pathology]] is relatively common.

The skin itself also produces at least one hormone precursor - Vitamin D.  

The skin is also a producer of Vitamin D., the precursor of the hormone [[Endocrine System - Calcium Homeostasis - Anatomy & Physiology#Calcitriol (Active Vitamin D3)|Calcitriol]].  

7-dehydrocholesterol can be converted to Vitamin D by Ultraviolet radiation at wavelength 300nm. This is not a major source in animals as the majority of the skin is covered by hair.

 

7-dehydrocholesterol is converted to Vitamin D by Ultraviolet radiation at wavelength 300nm. This is not a major source in animals as the majority of the skin is covered by hair in many species.

Vitamin D is then hydroxylated into it's active form, [[Endocrine System - Calcium Homeostasis - Anatomy & Physiology#Calcitriol (Active Vitamin D3)|Calcitriol]] in the [[Endocrine System - Kidney - Anatomy & Physiology|kidney.]]

Vitamin D is then hydroxylated into it's active form, [[Endocrine System - Calcium Homeostasis - Anatomy & Physiology#Calcitriol (Active Vitamin D3)|Calcitriol]] in the [[Endocrine System - Kidney - Anatomy & Physiology|kidney.]]