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:A calcium atom and a calcium ion have the same?A person with blood group B can only donate blood to…In the electrolytic extraction of calcium from…A woman with blood group A gives birth to a child…A cross between two parents produced four…