1) It is a process that physically breaks down food into smaller pieces. a) chemical digestion b) mechanical digestion c) physical digestion 2) It is a process that breaks down food into nutrients through the use of enzymes and acids. a) chemical digestion b) mechanical digestion c) physical digestion 3) Nutrients from digested food enter through_____. a) adsorption b) absorption c) secretion 4) Which organ/s secrete chemicals needed for digestion into the small intestine? a) stomach b) liver c) pancreas d) both a and b e) both b and c 5) Which statement is not correct about the interactions of the organs of the digestive system with the parts of the respiratory and circulatory systems? a) The glucose needed for cellular respiration comes from the digestive system via the cardiovascular system. b) The oxygen needed for the circular respiration comes from the respiratory system also via the cardiovascular system. c) The carbon dioxide produced in cellular respiration leaves the body by the opposite route. d) All the statements are correct.

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