ANATOMY

Detailed explanation-1: -What happens to the digested food? The small intestine absorbs most of the nutrients in your food, and your circulatory system passes them on to other parts of your body to store or use. Special cells help absorbed nutrients cross the intestinal lining into your bloodstream.

Detailed explanation-2: -Absorption in the small intestines Once broken down the nutrients are absorbed by the inner walls of the small intestine into the blood stream. The nutrients are rendered small enough so that they may pass, or “be transported", across the epithelial cells of the gastrointestinal tract.

Detailed explanation-3: -When food enters the digestive system, enterogastrone hormones are released. These increase blood flow through the dilation of vessels supplying the digestive system. They also reduce blood flow in other parts of the body, leading to tiredness.