Multiple Choice Questions (MCQs) on Parathyroid Hormone, Vitamin D and Calcium Metabolism:Biochemistry, Physiology
Multiple Choice Questions (MCQs) on Parathyroid Hormone, Vitamin D and Calcium Metabolism 1) Which of the following organ has the highest proportion of calcium in the body? a) Liver b) Muscle c) Bone d) None of the above 2) The plasma contributes to less than 0.5% of the total calcium in the body. Which of the following statement is not true regarding plasma calcium ? a) Approximately 50% of the plasma calcium is present in the ionized form b) Approximately 40% of the plasma calcium is present in proteins c) Approximately 10% of the plasma calcium is complexed with anions d) None of the above 3) Free, ionized calcium is biologically acid and tightly regulated by hormones. Which of the following hormone are secreted in response to increased serum calcium? a) Parathyroid hormone b) Vitamin D c) Calcitonin d) All of the above 4) Parathyroid hormone secretion is tightly controlled by the ionized calcium ions. The calcium binds to calcium-sensing cell surface recepto...