Stephanie  Galea, Renald  Blundell, 
    Physiology of Vitamin D,
    International Journal of Molecular Medicine and Advance Sciences,
    Volume 7,Issue 1,
    2011,
    Pages 1-4,
    ISSN 1813-176x,
    ijmmas.2011.1.4,
    (https://makhillpublications.co/view-article.php?doi=ijmmas.2011.1.4)
    Abstract: Vitamin D is relevant to several processes in the body mainly in the intracellular mechanisms affecting parathyroid hormone and calcitonin regulation, regulation of vitamin D production by negative feedback and calcium and phosphorous level regulation. Vitamin D may be synthesised in the dermal layer of the skin or absorbed through the diet and utilised. Its biosynthesis initiates from cholesterol and its derivatives and is followed by a cascade of reactions, completed in the kidneys and transported via the blood to where it is utilized. The vitamin D receptor determines the physiological effects of vitamin D and any mutations will cause imbalances in bone homeostasis.
    Keywords: Dihydrocholecalciferol;vitamin D receptor;calcium;parathyroid hormone;phosphate;calcitonin