MAIN FUNCTIONS OF THE CIRCULATORY SYSTEM Transport and distribute essential substances to the tissues Remove metabolic byproducts Adjustment of oxygen and nutrient supply in different physiologic states Regulation of body temperature humoral communicationMAIN FUNCTIONS OF THE CIRCULATORY SYSTEM ➢ Transport and distribute essential substances to the tissues. ➢ Remove metabolic byproducts. ➢ Adjustment of oxygen and nutrient supply in different physiologic states. ➢ Regulation of body temperature. ➢ Humoral communication