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