Memory The Endocrine SystemVersión en línea Review the organs of the endocrine system and their functions. por Kathy Dilliplane The body's "Master Gland" that controls the other endocrine organs. Regulates the female reproductive system Pancreas Parathyroid Glands Produces melatonin to regulate sleep cycles Thymus Regulates blood sugar levels Pineal Gland Increase heart rate during a "Fight or Flight" response Regulate the male reproductive system Regulates calcium levels in the blood. Helps the immune system recognize and fight pathogens Ovaries Pituitary Testes Regulates growth and metabolism Thyroid Adrenal Glands