Absorption in digestion is the process by which the digested food (broken down into simple forms like glucose, amino acids, fatty acids, and glycerol) passes through the walls of the intestine into the blood and lymph. From there, these nutrients are carried to different parts of the body where they are used for energy, growth, and repair.

Key Points You Need to Know

• Absorption = movement of digested food from intestine - blood/lymph.
• Only small, soluble molecules can be absorbed.
• It ensures the body actually gets energy and nutrients from the food we eat.