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The hepatopancreatic duct guarded by a s...

The hepatopancreatic duct guarded by a sphincter called

A

Pyloric sphincter

B

Sphincter of Oddi

C

Sphincter of Boyden

D

Cardiac sphincter

Text Solution

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The correct Answer is:
To answer the question regarding the sphincter that guards the hepatopancreatic duct, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Question**: The question asks for the name of the sphincter that controls the flow of bile and pancreatic juices through the hepatopancreatic duct. 2. **Identify the Options**: The options provided are: - A) Pyloric sphincter - B) Sphincter of Oddi - C) Sphincter of Boyden - D) Cardiac sphincter 3. **Analyze Each Option**: - **Pyloric Sphincter**: This sphincter is located between the stomach and the duodenum. It controls the passage of partially digested food from the stomach to the small intestine. Therefore, it does not guard the hepatopancreatic duct. - **Sphincter of Oddi**: This is a muscular valve that controls the flow of bile and pancreatic juices into the duodenum from the hepatopancreatic duct. This option is likely the correct answer. - **Sphincter of Boyden**: This sphincter is located in the bile duct near the hepatopancreatic ampulla. It is not the one that guards the hepatopancreatic duct itself. - **Cardiac Sphincter**: Also known as the lower esophageal sphincter, it is located between the esophagus and the stomach. It does not relate to the hepatopancreatic duct. 4. **Conclusion**: Based on the analysis, the correct answer is **B) Sphincter of Oddi**, as it is the sphincter that guards the hepatopancreatic duct. ### Final Answer: The hepatopancreatic duct is guarded by the sphincter called **Sphincter of Oddi**. ---
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