ANATOMY

Detailed explanation-1: -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: -Digesting Food Food entering the digestive systems causes nerve impulses to be sent to the brain; in response, the brain sends messages to the cardiovascular system to increase heart rate and dilate blood vessels in the digestive organs.

Detailed explanation-3: -The circulatory system transports blood through the human body. Blood delivers water·and nutrients from the digestive system, and oxygen from the respiratory system, to all cells in the body. Blood also carries wastes from body cells to the organs that remove wastes.

Detailed explanation-4: -The heart, blood and blood vessels work together to service the cells of the body. Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.