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