Answer:
The correct answer would be a small intestine.
The small intestine is the principal organ of digestion as well as absorption.
Events take place in the small intestine:
- Intestinal enzymes such as maltase, lactase, sucrase et cetera digest disaccharides to their respective monosaccharides such as glucose, fructose, galactose.
- Dipeptides are digested to amino acids.
- Intestinal lipases convert di and triglycerides into fatty acids and glycerols.
- Lastly, nucleotide and nucleoside are converted their respective sugars and bases.
- The digested food is then absorbed with the help of diffusion, facilitated diffusion, and active transport.
- The mucosa layer of small intestine consists of finger-like projections called villi and microvilli.
- They increase the surface area of the small intestine and help in absorbing the digested food.
- They then transport the absorbed materials to the bloodstream through capillaries and lymphatic vessels lying close to their surface.