4. ________ is a thyroid hormone which controls the balance of calcium in the body. A.Calcitonin B.Thyroxine C.Calmodulin D.All of these
Answer: Option A Solution: Calcitonin is a hormone that is produced in humans by the parafollicular cells (commonly known as C-cells) of the thyroid gland. Calcitonin is involved in helping to regulate levels of calcium and phosphate in the blood, opposing the action of parathyroid hormone.
