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