[INST] Based on the given context, what is the primary function of the human circulatory system?/nThe human circulatory system, also known as the cardiovascular system, is a complex network of blood vessels, the heart, and blood. Its primary function is to transport oxygen, nutrients, and other essential substances to the body's cells and to remove waste products, such as carbon dioxide and metabolic byproducts. [/INST]  ###Response: The primary function of the human circulatory system is to transport oxygen, nutrients, and other essential substances to the body's cells and to remove waste products, such as carbon dioxide and metabolic byproducts.