Calcitonin and the parathyroid hormone both control the level of 04:18 Endocrine System Calcitonin and the parathyroid hormone both control the level of (A) pituitary hormones in the blood (B) glucose in the blood (C) thymosins in the blood (D) calcium in the blood Answer: D Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+