What are key features of the villi epithelium? (4) (Just Mix Monkey Poop)

Tight Junctions: impermeable barrier = keeps digestive juices separate from tissues + maintains conc gradient + 1 way movement Microvilli: increase SA = more absorption + immobilized enzymes and channel proteins on the microvilli to increase uptake Mitochondria: ATP for active transport and pinocytosis Pinocytotic vesicles: bulk transport of fluid and dissolved solutes