ANATOMY

Detailed explanation-1: -The duodenum produces hormones and receives secretions from the liver (bile) and pancreas (pancreatic juice containing digestive enzymes). These various hormones, fluids and enzymes facilitate chemical digestion in the duodenum while also ensuring the acidity of chyme coming from the stomach is neutralised.

Detailed explanation-2: -Your small intestine makes digestive juice, which mixes with bile and pancreatic juice to complete the breakdown of proteins, carbohydrates, and fats. Bacteria in your small intestine make some of the enzymes you need to digest carbohydrates.

Detailed explanation-3: -Pancreatic juice secretion is principally regulated by the hormones secretin and cholecystokinin, which are produced by the walls of the duodenum, and by the action of autonomic innervation. The release of these hormones into the blood is stimulated by the entry of the acidic chyme into the duodenum.

Detailed explanation-4: -Intestinal juice or succus entericus is the alkaline yellowish watery fluid released by the glands lining the inner wall of the small intestine.

Detailed explanation-5: -Bile juice. Bile or gall is a dark green to yellowish brown fluid, produced by the liver of most vertebrates, that helps in the digestion of lipids in the small intestine.