ANATOMY

Detailed explanation-1: -The lining of the small intestinal mucosa is very highly specialized for maximizing digestion and absorption of nutrients. The lining is highly folded to form microscopic finger-like projections called villi which increase the surface area to help with absorption.

Detailed explanation-2: -Villi are small intestine vascular projections that project into the intestinal cavity. Each villus has numerous microvilli protruding from its epithelial surface. Villi are specialized for absorption and have extremely thin walls that are only one cell thick.

Detailed explanation-3: -The structure of the small intestine is designed for absorption of nutrients. The inside of the small intestine is lined with villi that absorb nutrients from the liquid mixture called chyme produced in the stomach from the food we eat.

Detailed explanation-4: -Jejunum. The jejunum is the middle part of the small intestine, between the duodenum and ileum. Most digestion and nutrient absorption takes place in the jejunum.