Changes

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 - Pathology|Endocrine associated skin pathology]] is relatively common.

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 - Pathology|Endocrine associated skin pathology]] is relatively common.

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]]. Ultraviolet light at a wavelength of 300nm is required to convert ''7-dehydrocholesterol'' to Vitamin D.  

The skin is also a producer of Vitamin D., the precursor of the hormone [[Calcium Homeostasis - Anatomy & Physiology#Calcitriol (Active Vitamin D3)|Calcitriol]]. Ultraviolet light at a wavelength of 300nm is required to convert ''7-dehydrocholesterol'' to Vitamin D.  

Whilst this is a key source of the vitamin in humans, as many animal species have hair covered skin, Vitamin D from this region is usually minimal, with dietary sources being much more important.  

Whilst this is a key source of the vitamin in humans, as many animal species have hair covered skin, Vitamin D from this region is usually minimal, with dietary sources being much more important.  

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, [[Calcium Homeostasis - Anatomy & Physiology#Calcitriol (Active Vitamin D3)|Calcitriol]] in the [[Endocrine System - Kidney - Anatomy & Physiology|kidney.]]