Answer:
The correct answer is - True.
Explanation:
The antagonistic hormones that maintain the calcium level are calcitonin and PTH which is parathyroid hormone. The parathyroid hormone is released from the parathyroid gland that helps in maintaining the calcium level in the blood. This hormone has released when the calcium level in the blood drops.
PTH regulates the calcium level by stimulating or activating the osteoclast activity which is the breakdown of calcium from bones to release in blood. PTH also helps in the absorption of calcium by activating vitamin D. Reabsorption is also one of the roles of PTH to maintain calcium ion in blood.
Thus, the correct answer is - true.