The common hepatic duct and main pancreatic duct enter into the:
a. Pyloric sphincter
b. Duodenum
c. Ileum
d. Cecum

검증된 단계별 안내

Understand the anatomy of the digestive system and the role of ducts in transporting bile and pancreatic enzymes. The common hepatic duct carries bile from the liver, and the main pancreatic duct carries digestive enzymes from the pancreas.

Identify the location where these ducts merge or enter the digestive tract. Both ducts join at the hepatopancreatic ampulla (also known as the ampulla of Vater) before entering the small intestine.

Recall the sections of the small intestine: duodenum, jejunum, and ileum. The duodenum is the first section of the small intestine and is the site where bile and pancreatic enzymes are released to aid digestion.

Eliminate incorrect options based on anatomical knowledge: The pyloric sphincter is part of the stomach, the ileum is the last section of the small intestine, and the cecum is part of the large intestine. None of these are involved in the entry of the common hepatic duct and main pancreatic duct.

Conclude that the correct answer is the duodenum, as it is the anatomical site where the common hepatic duct and main pancreatic duct release their contents into the digestive system.

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주요 개념

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Common Hepatic Duct

The common hepatic duct is a vital structure in the biliary system that carries bile from the liver. It merges with the cystic duct from the gallbladder to form the common bile duct, which plays a crucial role in digestion by delivering bile to the small intestine, particularly the duodenum.

Main Pancreatic Duct

The main pancreatic duct, also known as the duct of Wirsung, transports digestive enzymes produced by the pancreas to the duodenum. This duct is essential for the proper digestion of food, as it allows the release of enzymes that break down carbohydrates, proteins, and fats.

Duodenum

The duodenum is the first section of the small intestine, immediately following the stomach. It is a critical site for digestion, where bile and pancreatic juices mix with chyme to facilitate the breakdown of nutrients. The entry point for both the common hepatic duct and the main pancreatic duct is located here, making it a key area for digestive processes.

The common hepatic duct and main pancreatic duct enter into the:a. Pyloric sphincterb. Duodenumc. Ileumd. Cecum