THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -By the time indigestible materials have reached the colon, most nutrients and up to 90% of the water has been absorbed by the small intestine. 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.

Detailed explanation-2: -The large intestine functions to absorb any excess water from the material it receives from the small intestine. This also involves the collection of electrolytes, which move with water. Thus, the large intestine works to preserve and absorb water and electrolytes that were not absorbed by previous digestive organs.

Detailed explanation-3: -Assertion :Water and electrolytes are almost fully absorbed in the large Intestine. Reason: In large intestine, haustral contractions (slow segmenting movements) roll the forming faeces over and over, causing absorption of water and electrolytes.