some+ways+that+this+system+works+with+others

= = = = = how it works and which are the other systems : = = With the Muscular system and the Skeleton system because it carries oxygen and nutrients to cellsthat are in the muscles and bones. = = The Respiratory system because the blood takes the oxygen from the lungs and then the blood carry it around the body. = = The Digestive system takes and process the food and nutrients and then the blood take it to carry around the body. = = The blood brings dregs from cells to the Excreatory system to be expelled. = = With the Nervous system too,because the brain has many cells and gives the order to the heart to pump blood. = =The reproduction system needs the circulatory system because the baby needs to form correctly, and for that he needs enogh blood in the stomage of his mother.= ==