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Intestinal villi are small, finger-like projections that increase the absorptive surface area of the small intestine. Learn about their structure, function, and clinical significance in this article. Important villous membranes include the placenta and the mucous-membrane coating of the small intestine. The villi of the small intestine project into the intestinal cavity, greatly increasing the surface area for food absorption and adding digestive secretions. Villi are small, finger-like projections that increase the surface area of the small intestine for nutrient absorption. Learn more about their structure, role and diagram, and check related biology questions and solutions. Answer: Villi (singular: villus) are tiny, finger-like projections found in the lining of the small intestine . Their primary role is to increase the surface area for the absorption of nutrients, making them a key component in the digestive system.
