ANATOMY

Detailed explanation-1: -The large intestine, also known as the large bowel, is the last part of the gastrointestinal tract and of the digestive system in tetrapods. Water is absorbed here and the remaining waste material is stored in the rectum as feces before being removed by defecation.

Detailed explanation-2: -Small intestine. The walls of the small intestine absorb water and the digested nutrients into your bloodstream. As peristalsis continues, the waste products of the digestive process move into the large intestine.

Detailed explanation-3: -The large intestine has 3 primary functions: absorbing water and electrolytes, producing and absorbing vitamins, and forming and propelling feces toward the rectum for elimination.

Detailed explanation-4: -The large intestine (colon) is responsible for reabsorption of water, sodium, potassium, and vitamin K. However, retrospective studies have shown that the large intestine also is responsible for absorption of small amounts of calcium and magnesium.

Detailed explanation-5: -Absorption of ingested water and most solutes occurs in the proximal small intestine, therefore the rate at which beverages are emptied from the stomach is an important factor in determining the rate of water absorption.