HUMAN NUTRITION

Detailed explanation-1: -The role of the ascending colon is to absorb the remaining water and other key nutrients from the indigestible material, solidifying it to form stool. The descending colon stores feces that will eventually be emptied into the rectum.

Detailed explanation-2: -Formation and elimination of feces After the consumption of food, the small intestine firstly absorbs approximately 90% of ingested water, leaving the large intestine to absorb any remaining water. This process involves the conversion of liquid chyme residue into feces.

Detailed explanation-3: -The colon helps to absorb a small volume of water from the lumen (400ml/day).

Detailed explanation-4: -Water diffuses in response to the osmotic gradient established by sodium-in this case into the intercellular space. It seems that the bulk of the water absorption is transcellular, but some also diffuses through the tight junctions. Water, as well as sodium, then diffuses into capillary blood within the villus.