This sample menu for a day gives you 37 grams of fiber: 1  Breakfast: whole-grain bran flake cereal (5 grams of fiber), half a banana (1.5 grams of fiber), and skim milk. 2  Snack: 24 almonds (3.3 grams of fiber) and a quarter cup of raisins (1.5 grams of fiber)
1 large circular folds called plicae circulares (shown in the diagram to the right), most numerous in the upper part of the small intestine. 2  smaller folds called villi, which are finger like mucosal projections, about 1mm long.o aid in digestion and absorption: 1  the small intestine secretes enzymes and has mucous producing glands. 2  The pancreas and liver also deliver their exocrine secretions into the duodenum. 3  The mucosa is highly folded.
The small intestine is 5â6m in length, and most of the chemical digestion occurs within the first metre. Once digested into smaller molecules, absorption can take place.Millions of tiny finger-like structures called villi project inwards from the lining of the small intestine.These structures greatly increase the surface area of contact that the products of digestion have with the small intestine, allowing for their rapid absorption into the bloodstream.illions of tiny finger-like structures called villi project inwards from the lining of the small intestine. These structures greatly increase the surface area of contact that the products of digestion have with the small intestine, allowing for their rapid absorption into the bloodstream.