Question

ÓRAL QUESTIONS
1. In which two organs does digestion of food in humans mainly occur?
2. Absorption of digested food occurs in the stomach. Do you agree? Justify your answer.
3. All digestive juices are secreted by cells in the stomach and small intestine. Do you agree? Give reasons.
4. What happens to food after it is digested, and absorbed by the blood?
is the basic structure of the stomach of a cow different from the stomach of a human?
5. In what
way​

Answer 1

1. The answer is stomach and pancreas.
2. No, the statement is false as the absorption of digested food takes place in small all intestine with the help of finger-like projections called villi and not in stomach.
3. No, all digestive juices are not secreted by the cells of small intestine and stomach. ... The liver secretes bile juice which is used for the digestion of fats. Pancreas, on the other hand, produces pancreatic juice which digests starch and proteins into their simpler constituents.
4. The food that has been digested and absorbed is assimilated by the body. The absorbed food is transported by the blood to different parts of the body. This absorbed food is used by the cell for growth, reproduction and obtaining energy. Some of the absorbed food is also stored for future use.
5. The stomach of cows is composed of four chambers unlike human stomach which has a single chamber. The food in cows is firstly introduced in the first chamber of the stomach called rumen. In rumen, partial digestion of food occurs and the partially digested food is called cud. Thereafter, it is passed to the second chamber, from where it is reintroduced into the mouth for proper chewing. Followed by proper chewing, the remaining chambers of the stomach carry out complete digestion of food.