The (i)________ guards the hepato-pancreatic duct that opens together into (ii)_________.

Options

A. i-pyloric sphincter, ii-stomach
B. i-pyloric sphincter, ii-duodenum
C. i-sphincter of oddi, ii-stomach
D. i-sphinchter of oddi, ii-duodenum

Answer

To solve the question, we need to fill in the blanks regarding the anatomical structures associated with the hepato-pancreatic duct.

### Step-by-Step Solution:

1. **Identify the Structure Guarding the Hepato-Pancreatic Duct**:
- The hepato-pancreatic duct is a duct that carries bile and pancreatic juices from the liver and pancreas to the duodenum.
- The structure that guards this duct is known as the **Sphincter of Oddi**. This muscular valve regulates the flow of bile and pancreatic juices into the intestine.

2. **Identify the Structure into which the Duct Opens**:
- The hepato-pancreatic duct opens into the **duodenum**, which is the first part of the small intestine.
- This is where the bile and pancreatic juices are released to aid in digestion.

3. **Fill in the Blanks**:
- The first blank (i) should be filled with **Sphincter of Oddi**.
- The second blank (ii) should be filled with **duodenum**.

### Final Answer:
The Sphincter of Oddi guards the hepato-pancreatic duct that opens together into the duodenum.

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