12. Which of the following choices is CORRECT? A. trabeculae is the basic functional unit of compact bone B. Ca3(PO4) (hydroxyapatite) is the organic minerals contained in bone extracellular matrix C. Testosterone is hormone that is used in homone therapy to reduce osteoporosis in males D. Rickets is a condition that may cause bow legs in a child E. Parathyroid hormone (PTH) functions to increase the level of Ca in the blood F. All of the above G. Both A and B H. C, D and E

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