Passage of food into the stomach is controlled by

Options

A. Pyloric sphincter
B. Anterior oesophageal sphincter
C. Gastro-oesophageal sphincter
D. Sphincter of Oddi

Answer

To answer the question, "Passage of food into the stomach is controlled by," we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure of the Stomach**:
- The stomach is a part of the digestive system and is divided into different regions: the cardiac part, fundus, body, and pyloric part.

2. **Understand the Function of the Sphincters**:
- Sphincters are muscular structures that control the passage of substances through the digestive tract. They can open and close to allow or restrict the flow of food.

3. **Identify the Relevant Sphincters**:
- The two main sphincters related to the stomach are:
- **Gastroesophageal Sphincter**: This sphincter is located at the junction of the esophagus and the stomach. It controls the entry of food into the stomach.
- **Pyloric Sphincter**: This sphincter is located at the exit of the stomach, controlling the passage of digested food into the small intestine.

4. **Evaluate the Options**:
- **Option A: Pyloric Sphincter** - Incorrect for the entry of food; it controls exit.
- **Option B: Anterior Esophageal Sphincter** - Not a recognized term in anatomy.
- **Option C: Gastroesophageal Sphincter** - Correct, as it controls the entry of food into the stomach.
- **Option D: Sphincter of Oddi** - Incorrect; it regulates the flow of bile and pancreatic juice into the duodenum.

5. **Conclusion**:
- The correct answer is **Option C: Gastroesophageal Sphincter**, as it is responsible for controlling the passage of food into the stomach.