A. Increased renal vitamin D production and decreased renal tubular phosphate reabsorption B. Decreased renal vitamin D production and decreased renal tubular phosphate reabsorption C. Increased renal vitamin D production and increased renal tubular phosphate reabsorption D. Decreased renal vitamin D production and increased renal tubular phosphate reabsorption E. Unsure

A. Muscles, ligaments, and thyroid gland B. Thyroid gland, joints, and bone marrow C. Bone marrow, tendons, and teeth D. Teeth, muscles, and ligaments E. Unsure

A. The mutation causing the condition affects a parathyroid hormone gene on the X chromosome. B. The mutation causing the condition affects a phosphate-regulating gene on the X chromosome. C. The genetic defect is a dominant mutation on the X chromosome, which makes the condition more common in females than males. D. The genetic defect is a recessive mutation on the X chromosome, which makes the condition more common in males than females. E. Unsure

A. Aluminum B. Calcium C. Sodium D. Potassium E. Unsure

A. Vision deficits secondary to vitamin A deficiency B. Neurologic symptoms secondary to vitamin B deficiency C. Bone changes secondary to vitamin D deficiency D. Bleeding disorders secondary to vitamin K deficiency E. Unsure

A. Vitamin D and growth hormone B. Growth hormone and dental care C. Dental care and phosphate supplements D. Vitamin D and phosphate supplements E. Unsure

A. Bone pain B. Alkaline phosphatase levels C. Growth velocity D. Straightening of the bones in legs E. Unsure

A. Elevated serum parathyroid hormone level — increase calcitriol dose B. Elevated serum calcium level — increase calcitriol dose C. Normal serum parathyroid hormone level — decrease calcitriol dose D. Normal serum calcium level — increase calcitriol dose E. Unsure

A. 12 weeks B. 20 weeks C. 40 weeks D. 52 weeks E. Unsure

A. Low serum phosphorus levels B. Normal serum phosphorus levels C. Low serum alkaline phosphatase levels D. Normal serum alkaline phosphatase levels E. Unsure