3 functions of the large intestine?

Answer 1

The 3 main functions of the large intestine are:

1. Water reabsorption

2. Fermentation

3. Storing waste

The small intestine is mostly responsible for digesting and absorbing nutrients. By the time food passes into the large intestine (colon), most nutrients and around 90% of water has already been absorbed. Nevertheless, the large intestine does play an important role in reabsorbing water and in maintaining water balance.

The large intestine is full of bacteria, both good and bad, which ferment undigested food products. Eating certain types of food such as fiber, legumes, wheat, onions and fruit can lead to "excessive" production of gas. The bacteria breakdown these undigested products for their own nourishment. There is also a limited amount of absorption of some vitamins, such as vitamin K.

Finally, the large intestine acts as a conduit or pathway for the passage of waste products from the small intestine to the anus. Removal of the large intestine (colectomy), either partial of total, is generally well tolerated by people with few side effects. There is no significant effect on nutrition, however water re-absorption may be affected and diarrhea can also sometimes occur.

Answer 2

1. Resorption of food
2. Elimination of wastes
3. Bacteria present in large intestine synthesize vitamins for us.

Answer 3

1. Reabsorption of food
2. Elimination of wastes
3. Bacteria present in large intestine synthesize vitamins for us

Answer 4

Anaerobic bacteria in the large intestine produce some 'B" vitamins and vitamin "K,. Both these vitamins are absorbed as needed by the body.