Detail how calcium balance is maintained in the body
?When blood calcium levels are low, parathyroid hormone is secreted into the blood, which stimulates the activation of vitamin D, the reabsorption of calcium in the kidneys, and stimulates osteoclast cells to break down bone and release calcium into the blood. Vitamin D, in turn, works with parathyroid hormone to increases calcium absorption in intestines. When blood calcium levels are too high, calcitonin is secreted, which inhibits the activation of vitamin D and prevents calcium from being reabsorbed in the kidneys, as well as inhibiting osteoclast cells from breaking down bone.
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A) 2-3 months B) 1-2 weeks C) 2-3 weeks D) 1-2 months
A study examining the relationship between diet and weight in the United States and Japan is an example of a(n)
A) animal study B) biochemical or molecular biology study C) clinical trait D) epidemiology study
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a. Carbohydrates b. Proteins c. Vitamins d. Minerals
A dietitian is reviewing the laboratory results of a client's total cholesterol levels. The results are 210 mg/dL. These results would be classified as: a. desirable
b. normal. c. borderline high. d. high. e. excessive.