ANATOMY

Detailed explanation-1: -The ileum absorbs bile acids, fluid, and vitamin B-12. Finger-shaped structures called villi line the entire small intestine.

Detailed explanation-2: -The ileum helps to further digest food coming from the stomach and other parts of the small intestine. It absorbs nutrients (vitamins, minerals, carbohydrates, fats, proteins) and water from food so they can be used by the body.

Detailed explanation-3: -Absorption is the process by which the products of digestion are absorbed by the blood to be supplied to the rest of the body. During absorption, the digested products are transported into the blood or lymph through the mucous membrane. Absorption is achieved by the following mechanisms. Simple diffusion.

Detailed explanation-4: -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-5: -Adaptation of the ileum for absorption: Large surface area – due to being long and folded. Thin – digested food doesn’t have to travel far to reach the blood. Permeable – digested food can pass through easily. Good blood supply – to maintain the concentration gradient for diffusion between the ileum and bloodstream.