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