Answer :
Final answer:
The substances that flow through ducts to the duodenum to aid in digestion are pancreatic juices and bile. Pancreatic juices neutralize stomach chyme and contain enzymes for digestion, while bile emulsifies fats facilitating digestion and vitamin K absorption. Option b
Explanation:
Pancreatic juices are an alkaline solution rich in bicarbonate that neutralizes the acidity of chyme from the stomach. They contain enzymes critical for breaking down starches, disaccharides, proteins, and fats.
Bile, produced in the liver and stored in the gallbladder, also enters the duodenum through the bile duct. Bile contains bile salts that emulsify lipids, making them accessible to water-soluble enzymes and assisting the absorption of vitamin K.
The actions of secretin and cholecystokinin stimulate the pancreas and gallbladder to release these digestive substances. Secretin stimulates the pancreas to produce bicarbonate solution, while cholecystokinin (CCK) stimulates both the release of pancreatic juices and gallbladder bile into the duodenum. Option b