Fill in the Blanks Four Processes involved in NutritionOnline version nutrition digestion circulation respiration excretion by Julia Welker 1 breaks food digestive obtain digestion The body down to nutrients through a process called . It takes place in the system . 2 Blood body circulatory waste circulation carry oxygen vessels nutrients and around the and collect products created during nutrition . This process is called . It takes place in the system . 3 air oxygen respiratory respiration energy nutrients In the process of , the body obtains from the . The oxygen is needed to get from . Respiration takes place in the system . 4 excretory excretion waste eliminated nutrition In the process of , products that are created during are from the body . Excretion takes place in the system .