Compléter Systems ReviewVersion en ligne Use the words to help you make the activity. par Melissa Díaz 1 break filtering minerals nutrients excretes diet Urinary proteins ureters levels bladder The function of the digestive system is to down food , absorb and to supply energy to our body . At the end of this process , the system solid waste . There is another system called System , which is responsible for the blood using the kidneys . This also regulates the water and salt . The parts are : , kidneys , , urethra . It's important to eat food that contains carbohydrates , , and fat . This will help your body to have a healtier .