Hormones that help regulate blood calcium levels are produced by the? by Sunday | Sep 5 | Biology JAMB | 0 comments A. Adrenal B. thyroid C. pancreas D. parathyroid Correct Answer: Option D – parathyroid Users Also Read These:Use arrows to show the route and direction of blood…A mixture of calcium chloride and calcium…In the electrolytic extraction of calcium from…A cross between two parents produced four…What is the probability? of a man of blood group AB…