THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The majority of chemical digestion occurs in the small intestine. Digested chyme from the stomach passes through the pylorus and into the duodenum. Here, chyme will mix with secretions from both the pancreas and the duodenum. Mechanical digestion will still occur to a minor extent as well.

Detailed explanation-2: -The small intestine is where most chemical digestion takes place. The three major classes of nutrients that undergo digestion are proteins, lipids (fats), and carbohydrates. Chemical breakdown begins in the stomach and continues through the large intestine.