10. What is the primary digestive function of the small intestine. a. What features in the small intestine aid in absorption? b. How do the liver gall bladder, and pancreas contribute to the small intestine's function? Include the role of bile, sodium bicarbonate, and pancreatic juice. c. What is the role of secretin, cholecystokinin, motilin, peptide YY, and somatostatin? d. Describe the 4 major ways that nutrients are absorbed from the lumen of the small intestine: i. Passive diffusion