Endocrinology

  1. Vitamin D System
    1. Vitamin D Synthesis and Metabolism
      1. Cutaneous Synthesis
        1. 7-Dehydrocholesterol
          1. UV Radiation
          2. Dietary Sources
            1. Hepatic 25-Hydroxylation
              1. Renal 1α-Hydroxylation
                1. 24-Hydroxylase Pathway
                2. Vitamin D Receptor and Actions
                  1. Nuclear Receptor
                    1. Gene Regulation
                      1. Non-Genomic Effects
                      2. Physiological Functions
                        1. Calcium Absorption
                          1. Phosphate Absorption
                            1. Bone Mineralization
                              1. Immune Function
                                1. Cell Differentiation

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                              6. The Parathyroid Glands

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                              8. The Adrenal Glands