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ATI teas anatomy practice test questions and answers. Qs which of the following hormone is produced by the thyroid gland and is active in calcium metabolism? A. aldosterone B. calcitonin C. thyroxine D. Parathyroid - n Ans calcitonin Qs which of the following occurs at the beginning of systole in a healthy heart? A. ventricle contracts B. the atria contracts C. mitral valve opens D. the tri valve opens - n Ans ventricles contract Qs peripheral vasodilation result...