BIO 256 Exam | 68 Questions and Answers(A+ Solution guide)

function of digestive system - processes food, extracts nutrients and eliminates residue the physical breakdown of food into smaller parts - mechanical digestion A series of hydrolysis reactions that break dietary macromolecules into their monomers - chemical digestion 6 accessory organs - teeth, tongue, salivary glands, liver, gallbladder, pancreas what makes up the gi tract - stomach and intestines mechanical digestion occurs where - grinding of teeth and churning of stomach and small intestine chemical digestion occurs where - digestive enzymes produced by salivary glands, stomach, pancreas, and small intestine most absorption occurs where - small intestine small mucosal projections that increase surface area for absorption - villi permanent transverse folds in the intestinal lining - circular folds four layers of the digestive tract - mucosa, submucosa, muscularis externa, serosa (from inner to outer) the submucosal plexus is located ____ - in the submucosa layer