Part of the stomach which opens into the duodenum

Options

A. cardiac
B. pyloric
C. fundus
D. body

Answer

To determine the part of the stomach that opens into the duodenum, we can follow these steps:

### Step 1: Understand the Anatomy of the Stomach
The stomach is divided into four main regions:
1. Cardiac region
2. Fundus
3. Body
4. Pyloric region

### Step 2: Identify the Function of Each Region
- **Cardiac region**: This is where the esophagus opens into the stomach.
- **Fundus**: This is the upper curved part of the stomach.
- **Body**: This is the main central region of the stomach.
- **Pyloric region**: This is the part of the stomach that connects to the duodenum, which is the first part of the small intestine.

### Step 3: Locate the Opening to the Duodenum
The pyloric region is specifically designed to regulate the passage of partially digested food from the stomach into the duodenum. This opening is controlled by the pyloric sphincter, which ensures that food is released in a controlled manner.

### Step 4: Eliminate Incorrect Options
- The **cardiac region** does not open into the duodenum; it connects to the esophagus.
- The **fundus** and **body** of the stomach do not lead to the duodenum either.

### Conclusion
The part of the stomach that opens into the duodenum is the **pyloric region**.

### Final Answer
**Pyloric region** (Option B)

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