Yeperdoodles... (Yes :))
Yes. Bacteria also make substances that facilitate absorption of food ingredients.
Yep
The colonic microflora in the large intestine help to synthesize certain vitamins. The primary function of the large intestine is to salvage energy from carbohydrate not digested in the upper gut.
Bacteria in the intestine feed on indigestible carbohydrates and as a byproduct produce certain vitamins. "Friendly" bacteria colonize the gut, preventing disease causing bacteria from finding places to colonize.
Large Intestine
large intestine!
In certain cases it is the large intestine. In others I haven't a clue.
Functions of large intestineStores and eliminates non digestible materials Reabsoption of water and saltsBacteria present in large intestine synthesize certain vitamins for us
The Large Intestine reabsorbs water and maintains the fluid balance of the body, absorbs certain vitamins, processes undigested material (fibre), and stores waste. The Small Intestine digests fats, proteins and carbohydrates contained in the foods you consume, the resulting nutrients produced are absorbed through the lining of the small intestine and transferred to the bloodstream.
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.
Water
The large intestine is about 1.5 m long and consists of the caecum, appendix, colon and rectum - which are distributed in the abdominal cavity. The large intestine is the part of the digestive system where waste products from the food you eat are collected and processed into feces. A major function of the large intestine is to recover water used in processing the food, reducing the waste to a drier form. It also absorbs certain vitamins, some of which are released by the activity of helpful bacteria. (see also the related link)