Fill in the Blanks NUTRITION AND BEATHINGOnline version NUTRITION AND BEATHING by Lucía del Río Martinez 1 dioxide blood blood carbon muscules oxygen alveoli expel breathe nutrition Our and organs absorb in order to carry out yhe funcion of . The oxygen that we breathe in passes into our , where it´s transported to our muscules . Our muscules absorb oxygen and expel . There is an exchange of carbon dioxide between the , and the . Then we this gas as we out .