HUMAN NUTRITION

Detailed explanation-1: -The large intestine does not secrete any enzyme. It is about 1.5 m long and consists of the caecum, appendix, colon, and rectum. It mainly absorbs water from undigested food. In the oral cavity or mouth, salivary glands secrete an array of enzymes and substances that aid in digestion and also disinfection.

Detailed explanation-2: -The liver does not secrete any enzyme. The liver secretes bile. In the presence of bile, lipase, an enzyme breaks down the fat into smaller units (emulsify).

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: -PANCREAS. The pancreas produces a juice containing several enzymes that break down carbohydrates, fats, and proteins in food. The pancreas delivers digestive juice to the small intestine through small tubes called ducts.