Multiple Choice
The secretion of cholecystokinin (CCK) in the duodenum is stimulated by the presence of which components in the chyme?
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23. The Digestive System
Introduction to the Digestive System
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The structure formed by the union of the hepatic duct and cystic duct is the:
A
pancreatic duct
B
duodenum
C
gallbladder
D
common bile duct
Verified step by step guidance1
Step 1: Begin by identifying the anatomical structures involved in the problem. The hepatic duct carries bile from the liver, while the cystic duct connects to the gallbladder, which stores bile.
Step 2: Understand the function of these ducts. The hepatic duct and cystic duct merge to form a single structure that transports bile to the duodenum for digestion.
Step 3: Recall the name of the structure formed by the union of the hepatic duct and cystic duct. This structure is called the common bile duct, which plays a crucial role in the biliary system.
Step 4: Eliminate the incorrect options. The pancreatic duct is involved in transporting pancreatic enzymes, not bile. The duodenum is the first part of the small intestine, and the gallbladder stores bile but does not form a duct.
Step 5: Confirm that the correct answer is the common bile duct, as it is the structure formed by the union of the hepatic duct and cystic duct.
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