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