HUMAN NUTRITION

Detailed explanation-1: -Enzymes are used to break down the food into nutrients, which are processed in the large intestine and the small intestine. The small intestine absorbs the nutrients and sends them to the main bloodstream of the body. It also does most of the Chemical Digestion, but no mechanical digestion takes place here.

Detailed explanation-2: -In the large intestine, mechanical digestion begins when chyme moves from the ileum into the cecum, an activity regulated by the ileocecal sphincter. Right after you eat, peristalsis in the ileum forces chyme into the cecum.

Detailed explanation-3: -Unlike the small intestine, the large intestine produces no digestive enzymes. Chemical digestion is completed in the small intestine before the chyme reaches the large intestine. Functions of the large intestine include the absorption of water and electrolytes and the elimination of feces.

Detailed explanation-4: -Digestion does not take place in large intestine since enzymes are not secreted here. In large intestine, undigested food gets converted to faeces.

Detailed explanation-5: -Mechanical Digestion The large pieces of food that are ingested have to be broken into smaller particles that can be acted upon by various enzymes. This is mechanical digestion, which begins in the mouth with chewing or mastication and continues with churning and mixing actions in the stomach.