intestinal villi are tiny projections that boost nutrient absorption in the small intestine

digestion scientific disease biology medical anatomical health structure celiac diagram intestinal lining wall stomach science small membrane villus digestive tissue villous histology microvilli surface absorption epithelial mucus gastrointestinal fold tube system epithelium lacteal ileum organ intestine tract anatomy gut cell vector human villi bowel tiny projections boost nutrient finger-like increase area bloodstream blood vessels lymphatics font brand text pink line cartoon presentation advertising purple hand circle design pattern drawing face nose