Discuss how the digestive system structures, organs, chemicals are well suited to maximize chemical and mechanical breakdown of food. Think about enzymes, structures like villi, acidity in the stomach.
A) Villi increase absorption; stomach acidity denatures proteins.
B) Enzymes in saliva initiate carbohydrate digestion; small intestine absorbs nutrients.
C) Gallbladder stores bile; large intestine reabsorbs water.
D) Liver produces enzymes; pancreas secretes bicarbonate.
