Question

Most of the digestion and absorption of the food take place in
A) Stomach
B) Liver
C) Small intestine
D) Large intestine

Answer 1

Digestion is the process of breakdown of food into smaller components until they can be absorbed and assimilated into the body. In the human body, the process of digestion takes place in the human digestive system.

Complete Answer:
- The human digestive system consists of a series of structures and organs through which food and water pass. They are converted into utilisable form which is absorbed in the bloodstream.
- It starts with the mouth and ends in anus covering a distance of 9 meters. The major digestive organ is the stomach. Stomach secretes gastric juices. It helps in digestion of proteins.
- Liver secretes bile juice into the stomach which helps in digestion of fat.
- The largest part of the GI tract is the large intestine. Water is absorbed here. Also the remaining waste matter is stored.
- Most of the digestion and re-absorption of food takes place in the small intestine. The food stays for a longer time in the small intestine as a result of which more re-absorption of nutrients takes place.
- The small intestine secretes a large number of digestive enzymes for further digestion of food.

The correct answer is (C). Most of the food is digested and re-absorbed in the small intestine.

Note: The digestive system has 3 important functions- digestion, re-absorption, and assimilation. The waste products of digestion are defecated from anus via rectum.