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