Which of the following is true of calcium metabolism?
a) Calcitonin causes a rise in plasma calcium
b) Primary hyperparathyroidism is usually asymptomatic
c) Vitamin D is secreted by the parathyroid glands
d) Oliguria is a symptom of hypercalcaemia
Correct Answer
b) Primary hyperparathyroidism is usually asymptomatic
Feedback:
It is parathyroid hormone that elevates plasma calcium. With primary hyperparathyroidism the rise in plasma calcium is usually mild and asymptomatic. Vitamin D is produced in the skin from sunlight. Hypercalcaemia usually causes polyuria.