Peristalsis is A. production of saliva. B. physical breakdown of starch. C. rhythmic contractions of the digestive tract. D. the opening of a sphincter. E. Two of the above 10.
Digestion is the A. chemical and mechanical breakdown of food into small molecules.
B. absorption of protein molecules into the blood. C. conversion of blood glucose to liver glycogen. D. secretion of enzymes. E. All of the above. A. True B. False 12.