Q. Blood calcium levels are controlled by hormones from which structures?
A. The parathyroid glands and the thyroid gland
B. The anterior lobe of the pituitary gland and the thyroid gland
C. The parathyroid glands and the anterior lobe of the pituitary gland
D. The adrenal cortex and the hypothalamus.
Answer: The parathyroid glands and the thyroid gland