Completar frases Cells and sytemsVersión en línea Complete the sentence using the information given. por Camilo Anturi Murcia 1 tissues life functions system digestive units organs body cells smallest organs The are the of ; when these are together can form , which are in charge of conform with different in the . Finally , a is a group or , which work together with an specific purpose . ( e . i . : circulatory , , respiratory ) .